Category: 3. Business

  • Fighting to Keep Bad Patents in Check: 2025 in Review

    Fighting to Keep Bad Patents in Check: 2025 in Review

    A functioning patent system depends on one basic principle: bad patents must be challengeable. In 2025, that principle was repeatedly tested—by Congress, by the U.S. Patent and Trademark Office (USPTO), and by a small number of large patent owners determined to weaken public challenges. 

    Two damaging bills, PERA and PREVAIL, were reintroduced in Congress. At the same time, USPTO attempted a sweeping rollback of inter partes review (IPR), one of the most important mechanisms for challenging wrongly granted patents. 

    EFF pushed back—on Capitol Hill, inside the Patent Office, and alongside thousands of supporters who made their voices impossible to ignore.

    Congress Weighed Bills That Would Undo Core Safeguards

    The Patent Eligibility Restoration Act, or PERA, would overturn the Supreme Court’s Alice and Myriad decisions—reviving patents on abstract software ideas, and even allowing patents on isolated human genes. PREVAIL, introduced by the same main sponsors in Congress, would seriously weaken the IPR process by raising the burden of proof, limiting who can file challenges, forcing petitioners to surrender court defenses, and giving patent owners new ways to rewrite their claims mid-review.

    Together, these bills would have dismantled much of the progress made over the last decade. 

    We reminded Congress that abstract software patents—like those we’ve seen on online photo contests, upselling prompts, matchmaking, and scavenger hunts—are exactly the kind of junk claims patent trolls use to threaten creators and small developers. We also pointed out that if PREVAIL had been law in 2013, EFF could not have brought the IPR that crushed the so-called “podcasting patent.” 

    EFF’s supporters amplified our message, sending thousands of messages to Congress urging lawmakers to reject these bills. The result: neither bill advanced to the full committee. The effort to rewrite patent law behind closed doors stalled out once public debate caught up with it. 

    Patent Office Shifts To An “Era of No”

    Congress’ push from the outside was stymied, at least for now. Unfortunately, what may prove far more effective is the push from within by new USPTO leadership, which is working to dismantle systems and safeguards that protect the public from the worst patents.

    Early in the year, the Patent Office signaled it would once again lean more heavily on procedural denials, reviving an approach that allowed patent challenges to be thrown out basically whenever there was an ongoing court case involving the same patent. But the most consequential move came later: a sweeping proposal unveiled in October that would make IPR nearly unusable for those who need it most.

    2025 also marked a sharp practical shift inside the agency. Newly appointed USPTO Director John Squires took personal control of IPR institution decisions, and rejected all 34 of the first IPR petitions that came across his desk. As one leading patent blog put it, an “era of no” has been ushered in at the Patent Office. 

    The October Rulemaking: Making Bad Patents Untouchable

    The USPTO’s proposed rule changes would: 

    • Force defendants to surrender their court defenses if they use IPR—an intense burden for anyone actually facing a lawsuit. 
    • Make patents effectively unchallengeable after a single prior dispute, even if that challenge was limited, incomplete, or years out of date.
    • Block IPR entirely if a district court case is projected to move faster than the Patent Trial and Appeal Board (PTAB). 

    These changes wouldn’t “balance” the system as USPTO claims—they would make bad patents effectively untouchable. Patent trolls and aggressive licensors would be insulated, while the public would face higher costs and fewer options to fight back. 

    We sounded the alarm on these proposed rules and asked supporters to register their opposition. More than 4,000 of you did—thank you! Overall, more than 11,000 comments were submitted. An analysis of the comments shows that stakeholders and the public overwhelmingly oppose the proposal, with 97% of comments weighing in against it. 

    In those comments, small business owners described being hit with vague patents they could never afford to fight in court. Developers and open-source contributors explained that IPR is often the only realistic check on bad software patents. Leading academics, patient-advocacy groups, and major tech-community institutions echoed the same point: you cannot issue hundreds of thousands of patents a year and then block one of the only mechanisms that corrects the mistakes.

    The Linux Foundation warned that the rules “would effectively remove IPRs as a viable mechanism” for developers.

    GitHub emphasized the increased risk and litigation cost for open-source communities.

    Twenty-two patent law professors called the proposal unlawful and harmful to innovation.

    Patients for Affordable Drugs detailed the real-world impact of striking invalid pharmaceutical patents, showing that drug prices can plummet once junk patents are removed.

    Heading Into 2026

    The USPTO now faces thousands of substantive comments. Whether the agency backs off or tries to push ahead, EFF will stay engaged. Congress may also revisit PERA, PREVAIL, or similar proposals next year. Some patent owners will continue to push for rules that shield low-quality patents from any meaningful review.

    But 2025 proved something important: When people understand how patent abuse affects developers, small businesses, patients, and creators, they show up—and when they do, their actions can shape what happens next. 

    This article is part of our Year in Review series. Read other articles about the fight for digital rights in 2025.

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  • Shoppers shun UK high streets despite lure of Boxing Day sales | Retail industry

    Shoppers shun UK high streets despite lure of Boxing Day sales | Retail industry

    Fewer shoppers have headed to UK high streets in search of Boxing Day bargains, with central London suffering a significant decline in visitors as many decided to shun the traditional start of the sales.

    Footfall at the country’s high streets and shopping centres fell on Friday morning, running slightly behind last year, according to figures from the monitoring company MRI Software. Across all UK retail destinations footfall slipped by 0.3%.

    Following on from a decline in Boxing Day activity in 2024, there were 2.4% fewer visitors on Britain’s high streets than on 26 December last year, while there was a 2.6% slide in the number of people going to shopping centres.

    However, retail parks bucked the trend and experienced a 6.9% increase in the number of visitors on Boxing Day morning. Retail parks, which are mostly in out-of-town locations, accessible by car and often offering free parking, have become more popular with shoppers in recent years thanks to their convenience.

    Boxing Day shoppers in Liverpool. Photograph: Peter Byrne/PA

    The rise in shoppers deciding to visit retail parks could be seen as an “encouraging start to Boxing Day”, said Jenni Matthews, the marketing and insights director at MRI.

    “This suggests that shoppers may well be coming out earlier than expected to grab those bargains; brush off the festive cobwebs,” she added.

    Colder temperatures may have put off some would-be shoppers from travelling far from home. Central London recorded a 7.7% fall in the number of visitors compared with a year earlier, a much larger decline than the 3.4% fall recorded in other cities.

    By contrast, there was a near 4% increase in visitor numbers in outer London, and there was a 10% rise in footfall in coastal towns, as consumers hoped to combine a visit to the shops with a day out.

    The traditional Boxing Day start to the post-Christmas sales has increasingly shifted online in recent years, giving consumers the opportunity to secure some deals from the comfort of the sofa as early as Christmas Day itself. Large fashion and homeware retailers including Marks & Spencer and Next are now offering discounts of up to 50% online, while reductions will only be available in stores from Saturday.

    Despite this, groups of shoppers travelled to Manchester’s Trafford Centre indoor mall, where some outlets opened their doors as early as 7.30am.

    Queues gathered outside the Selfridges department store before opening, which was offering reductions of up to 50%, as was the cosmetics retailer Lush.

    In the run-up to the big day, retailers had been hoping for a late rush to buy presents, given that Christmas Day fell on a Thursday this year, anticipating that shoppers would hunt out last-minute items at the start of the week.

    However, there were signs that some consumers held back on purchases. Mild weather during the autumn and the start of winter for much of the country resulted in fewer people adding jumpers, coats or boots to their baskets, according to Clive Black, the head of consumer research at Shore Capital.

    Many large fashion retailers – including Next and John Lewis – launched their reductions before Christmas, while others including New Look and Sports Direct were advertising discounts of up to 70%.

    Retailers have faced a tough year of trading in 2025, with many consumers reining in their spending at a time when energy and grocery bills remain high. Uncertainty in the run-up to Rachel Reeve’s budget in late November over possible tax rises hit consumer confidence at the start of the crucial pre-Christmas trading period.

    However, the average shopper is expected to spend £17 more on the end-of-year sales compared with last year, according to figures from the lender Barclays, taking the average budget to £253, up from £236 in 2024. However, it predicts that fewer consumers will take part amid cost of living pressures.

    Consumers around the UK were expected to spend £3.6bn in the Boxing Day sales, as more sales shoppers use AI and other tools to help them locate the best deals. That figure was £1bn lower than was estimated for Boxing Day 2024.

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  • Apple seeks to appeal £1.5bn ruling it overcharged UK customers | Apps

    Apple seeks to appeal £1.5bn ruling it overcharged UK customers | Apps

    Apple is seeking to overturn a landmark £1.5bn court ruling on behalf of millions of UK customers, which found the company overcharged them for years in its App Store.

    The iPhone maker has applied to the court of appeal to challenge a verdict that campaigners heralded as the start of a “tidal shift against big tech”.

    It is one of a cluster of cases heading towards trial in 2026 as consumers realise the mounting cost of paying up to 30% commission – what campaigners call the “Apple tax” – on apps and in-app purchases, which more people rely on for activities from fitness to dating.

    The appeal, if allowed, involves one of several class action suits against Apple and Google in which consumers, small businesses and entrepreneurs are demanding over £6bn in combined compensation. The class action cases use an opt-out system that means millions of people can be represented at once in claims of breaches of competition law.

    “It’s definitely a tipping point,” said Dr Rachael Kent, an academic at King’s College London who won the £1.5bn case against Apple on behalf of 36 million UK consumers. “People are pushing back against the harms from digital worlds, which they have to be living in and through every day and the financial implications of that,” she said.

    Apple said most apps are subject to a 15% commission, and the App Store helps drive the UK’s digital economy. Photograph: Jakub Porzycki/NurPhoto/Shutterstock

    Kent added that the win in October still felt “a bit pinch me”. If Apple’s appeal fails, every person in the UK who made App Store purchases between 2015 and 2024 could be entitled to a payout.

    In the suite of class action cases, Apple and Google are accused of overcharging British consumers and developers in their app stores and, in the case of Apple, of “trapping” and overcharging customers with its iCloud data storage service.

    Instead of up to 30%, Apple should be charging commission of 17.5% when selling apps and 10% on in-app purchases, while app developers should pay 10%, the competition appeal tribunal found in Kent’s case.

    Another of the cases is being brought by Barry Rodger, a law professor at the University of Strathclyde, on behalf of more than 2,000 app developers who he argues are collectively entitled to up to £1bn in compensation.

    “Small and medium-sized app developer businesses have suffered as the result of excessive profiteering by the App Store and Google Play,” he said. His case alleges Google Play has charged “excessive, arbitrary and discriminatory commissions” against developers, with the makers of dating and games apps particularly affected.

    His suit is expected to reach trial at the competitions appeal tribunal in October 2026, and will be jointly managed with a claim for about £1bn on behalf of 19 million Google Play customers, who are alleged to have been overcharged. That case is being brought by the consumer activist Liz Coll and accuses Google of “excluding competition and/or charging an unlawfully high level of commission on digital purchases”, breaching competition law.

    Coll said: “These types of large collective proceedings are new in the UK, but I’m really excited about the potential of the Kent decision to not only make people aware they were paying too much for apps through opaque commission but also that there is now a clear route to getting that put right. Where we need consumers to get really active now is in claiming back the money they’re owed.”

    A Google spokesperson said: “Android provides more choice than any other platform and our fees are the lowest of any major app platform. We’ll defend these cases vigorously.”

    A class action has also been brought on behalf of Google Play customers. Photograph: Issei Kato/Reuters

    Google argues that the class action cases seek to upend a system that has lowered prices and increased choice and that, if successful, would make downloading and using apps on Android phones more complicated and less safe.

    And in the largest of all the claims, November saw the consumer campaign group Which? announce a £3bn claim against Apple over its iCloud services, claiming it is “trapping” customers with Apple devices into using it.

    Apple called the Which? claims unfounded and said no customers are required to use iCloud. The company said it strongly disagrees with the ruling in Kent’s case over the App Store, and the tribunal took a flawed view of the “thriving and competitive app economy”, with other platforms providing “vigorous competition”. It said most apps are subject to a 15% commission, and the App Store helps drive the UK’s digital economy, facilitating billings and sales of over $55bn (£41bn) in the UK in 2024.

    Kent said that people are “waking up to the harms of digital life and how it can be detrimental mentally, physically and financially”.

    “There is a tidal shift that is happening against big tech,” she said. “Consumers are looking at all of the tools that they have to use every day. Covid really accelerated our reliance on technology and many of us went from using five apps in a week to perhaps 10 apps in a day to manage food shopping, food delivery, retail, fitness and diet tracking, keeping in close communication with friends and family, much more social media, increased screen time.

    “A big part of the last six years working the case has been about educating people that this is actually happening. That’s what tech giants and marketeers like Apple are so brilliant at. It’s creating an ecosystem where we are foreclosed into decision making and we don’t even realise that this is actually how it’s happening.”

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  • NHTSA investigating Tesla Model 3 door releases following complaints

    NHTSA investigating Tesla Model 3 door releases following complaints

    Door handles on a Tesla Model 3 in front of the company’s store in Colma, California, US, on Monday, Nov. 10, 2025. Tesla Inc. is working on a redesign of its door handles, which have drawn scrutiny over safety incidents that trapped passengers insid

    The National Highway Traffic Safety Administration has opened a defect investigation into Tesla’s Model 3 vehicles over the car door’s release and concerns the controls may not be easy to find in an emergency – the same concerns of Piedmont families whose college-age children died in a Cybertruck with the same type of door release.

    Tesla Model 3 door handles

    NHTSA’s Office of Defects Investigation opened the investigation on Dec. 23 after getting a complaint from a man in Georgia that called the mechanical door release “hidden, unlabeled, and not intuitive to locate during an emergency,” according to the filing. The filing references one incident involving a crash or fire, with one injury.

    The agency said the probe covers nearly 180,000 model year 2022 Tesla Model 3 vehicles, where the chief complaint is that the “emergency egress controls are not readily accessible and clearly identifiable.”

    Tesla Model Y door handles

    This investigation follows another NHTSA inquiry stemming from nine examples of Tesla’s 2021 Model Y cars, where the agency reported parents not being able to get their children out of the back of the car, and they ended up breaking a window to get back in.

    Based on NHTSA’s preliminary review, this condition appears to occur when the electronic door locks receive insufficient voltage from the vehicle.

    Tesla response

    Tesla did not immediately respond Friday to the latest NHTSA investigation.

    But in September, Tesla design chief Franz von Holzhausen told Bloomberg’s Hot Pursuit! podcast that the company was looking to combine the manual and electronic release mechanisms in the doors, which are now separate, in order to make escaping the car easier and quicker in a “panic situation.”

    “The idea of combining the electronic one and the manual one together into one button, I think, makes a lot of sense,” he said on the podcast. “That’s something that we’re working on.”

    A closer look at Tesla Cybertruck’s design following death of 3 Piedmont students

    Nearly a month after three college students died in a fiery Tesla Cybertruck crash in Piedmont, many questions still remain. We took a closer look at the car’s design and talked to experts about the car’s unique features.

    Piedmont deaths in Cybertruck

    (L-R) Soren Dixon, Krysta Tsukahara and Jack Nelson, all 2023 Piedmont High graduates, were killed in a crash in Piedmont on Nov. 27, 2024. Photo: City of Piedmont 

    The door handles are the subject of lawsuits filed by the parents of two college students who died in a fiery crash while they were passengers in a Tesla Cybertruck in Piedmont last year, just before Thanksgiving. The lawsuits allege the tricky design of the Cybertruck’s doors left the college students to die inside.

    The families of Krysta Tsukahara, 19, and Jack Nelson, 20, have each filed separate lawsuits against Tesla.

    Shortly after that fatal crash, KTVU took a closer look at the Cybertruck design, especially the issues with its electric doors and hard-to-break windows, exposing some of the same issues that the federal government is now investigating.

    In a Cybertruck, the manual release for the door locks is a latch on the door in the front of the car by the window switches, and under a plastic well in the back “map pocket” of the car.

    “It was clear to us that the door failed to operate because it lost power,” Roger Dreyer, the attorney for Krista’s parents, Noelle and Carl Tsukahara, said in a previous interview in October.

    Nelson also survived the initial impact of the crash, his parents’ attorney, Matthew Davis, said at the time.

    “His injuries were relatively minor,” Davis said. “What killed him was that he couldn’t get out of the car.”

    A Bloomberg investigation this month found that 15 people have died over the last decade after being unable to open Tesla vehicle doors following a crash.

    TeslaPiedmont

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  • BP1/2 100 Count Premium Plugs 1/2 or .5 Plug for use in PDR

    The Box Man






    Reviewed in the United States on February 10, 2025


    The design of these gives me much more confidence in them staying in place compared to flat top style body plugs. I ran out of the other style for a project and when these arrived, swapped out the others to be confident nothing will come loose. Application was the floorboard of a project vehicle for filling in unneeded holes.

    Customer






    Reviewed in the United States on September 29, 2024


    Fit perfect , looks as if it was done professionally. Pleased

    Francis Préville






    Reviewed in Canada on December 30, 2024


    Répond à mes besoin et est exactement ce qui est décrit

    Suzanne Dallaire






    Reviewed in Canada on November 1, 2024


    C’est parfait pour les antirouilles

    Guy F.






    Reviewed in Canada on January 7, 2024


    Fit great and removable. Reusable too.

    VALMOND GALLANT






    Reviewed in Canada on February 15, 2023


    I like that it’s plastic, because I use it for rust proofing liquid,s that can detariate rubber plugs

    Gus






    Reviewed in Canada on November 26, 2023


    Worked great.

    Bricoleur






    Reviewed in Canada on November 26, 2023


    good

    Stephane Lebreux






    Reviewed in Canada on October 26, 2023


    Un poile cher mais la qualité du plastique est très bonne.

    denis






    Reviewed in Canada on December 8, 2022


    Great

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  • The Future of Everything’s Best of 2025 – The Wall Street Journal

    1. The Future of Everything’s Best of 2025  The Wall Street Journal
    2. From robot ‘girlfriends to AI lipstick’: The weirdest tech of 2025  Euronews.com
    3. 5 Innovative Technologies Of 2025 That Can Deliver Real-World Impact  Forbes
    4. Time Magazine Reveals the Top 5 Inventions of 2025: Robots and AI Transforming Daily Life  عالم تسعة
    5. 2025 emerges as landmark year for innovation from insect-tracking cameras to water-from-air coffee makers  samaa tv

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  • Trabuco Canyon Post Office Resumes Operations – California newsroom

    Trabuco Canyon, CA– Effective December 26, the Trabuco Canyon Post Office located at 30595 Trabuco Canyon Rd, Trabuco Canyon, CA 92678 is resuming all operations.

    The Post Office was temporarily closed due to inclement weather and limited road access.

    The Trabuco Canyon Post Office is open at its regular retail schedule Monday- Friday 9:00 a.m. -1:00 p.m., 2:00 p.m. – 4:00 p.m.

    The safety of our customers and employees is our top priority. We appreciate our customers’ patience during this temporary closure.

    # # #

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  • Newfoundland and Labrador warns of text, phone call scams circulating

    Newfoundland and Labrador warns of text, phone call scams circulating

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    The Newfoundland and Labrador government is warning of multiple scams circulating leading up to the holidays. 

    Since Dec. 4, the province has put out two public advisories warning the public of scammers trying to obtain personal information.

    The first scam involves a text message appearing to be from MyGovNL and instructs the recipient to click a link to a fake website where they will be prompted to provide personal information. 

    Mike Goosney, the minister responsible for the Office of the Chief Information Officer, said the government would never ask someone for information by clicking on a link. 

    “It can grab the information from your personal data [and] oftentimes it’ll link into your financial accounts or to get passwords,” he told CBC Radio’s Newfoundland Morning.

    “And then it’s basically an open book for hackers to be able [to] do the harm, which is a lot of times financial.”

    He says the text can appear legitimate and once scammers receive personal information, it can allow them to access financial accounts. 

    “It’s just so disheartening to think that someone could work all their life and with the click of a button, someone could take it away from them,” Goosney said. 

    The province says if someone receives a scam text message, they should forward it to 7726 to alert their cellular provider. 

    They should then delete the message, block the number and report it to local law enforcement and the Canadian Anti-Fraud Centre at 1-888-495-8501. 

    The second scam the province is warning of is a telephone call claiming to be on the behalf of Premier Tony Wakeham, asking for personal information in exchange for a senior’s bonus.

    A man in a blue suit is smiling. A crowd of people are mingling behind him.
    Mike Goosney, minister responsible for the Office of the Chief Information Officer, says the government is working to track text and phone call scams. (Darrell Roberts/CBC)

    Goosney says the scammers are looking to prey on seniors’ vulnerability

    “It is very much alarming if you don’t feel it’s something or if you do feel it’s something that’s too good to be true, to delete right away. And you know, let authorities know.”

    If anyone receives such a phone call, the province is asking them to immediately hang up without providing any information, and then report it to the RNC or RCMP. 

    Reports to the RNC can be made online or by calling 709-729-8000, and reports to the RCMP can be made by contacting the local detachment or calling 1-800-709-7267.

    Goosney says the government is working to track these scams, and that they are working on providing more education about scams to the public. 

    Download our free CBC News app to sign up for push alerts for CBC Newfoundland and Labrador. Sign up for our daily headlines newsletter here. Click here to visit our landing page.

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  • Boxing Day sales fall flat once again

    Boxing Day sales fall flat once again

    Faarea MasudBusiness reporter

    Getty Images Shoppers on Oxford Street, London, on Boxing Day 2025.Getty Images

    Boxing Day sales have seen a muted start as shoppers continued to shun bricks-and-mortar stores in favour of online.

    By 3pm, visits to UK high streets were down 1.5% on 2024, while shopping centres saw a 0.6% fall, according to data from MRI Software.

    MRI’s footfall data showed retail parks saw 6.7% more people visiting compared with last year, but the rise has so far not been big enough to see an overall or significant bump in visitors.

    Barclays expects shoppers to spend £3.6bn in the sales, down from the £4.6bn they forecast for the sales in 2024, with fewer people planning to bargain hunt than last year. The amount spent online is also predicted to fall.

    Although people are still going out shopping, the figures indicate the Boxing Day sales are not the big event they once were.

    The Barclays consumer spend report suggests those who plan to shop have upped their budgets by £17 compared with last year, but overall people are forecast to spend less this year than last year on Boxing Day sales.

    Karen Johnson, head of retail at Barclays, said shoppers have been cost-conscious through the year and that behaviour is likely to extend into the Boxing Day sales.

    ‘Subdued atmosphere’

    A shopper with short blonde hair, glasses, a pink scarf, smiling and wearing a black jacket.

    But one shopper from Glasgow said she preferred the more subdued Boxing Day atmosphere.

    “Everybody’s taking it at their own pace, it’s a more enjoyable experience shopping on Boxing Day, I think,” she told the BBC.

    Although the festive period is an opportunity for many retailers to make up for quiet periods of the year, several major brands closed their stores on Boxing Day, including Next, John Lewis, Poundland, Wickes and Iceland.

    Another shopper in Glasgow said that he comes out every year only because it was his family’s tradition.

    A man with a beard, smiling, wearing a necklace, and a pink jumper under a beige winter coat.

    “It’s definitely a lot quieter than usual,” he noticed, “though Lush did have a big, massive queue this year.”

    Diane Wehrle, chief executive of Rendle Intelligence and Insights, said 2025 had been a challenging year for many people.

    “In the run up to Christmas, consumers have really pulled back on spending because they were very nervous, particularly pre-Budget in November,” she told the BBC.

    Chancellor Rachel Reeves’ announced in her last budget up to £26bn in tax rises in 2029-30, which will bring the UK’s tax take to an all-time high of 38% of national income in 2030-31, according to the OBR.

    It means a further squeeze on household budgets as inflation – the rate at which prices rise – remains stubbornly high, though it has fallen from peaks seen in recent years.

    For employers, higher minimum wage costs and National Insurance contributions announced last year mean they’re footing higher costs in an economy with sluggish growth.

    Separate festive spending data from Visa showed that in the run-up to Christmas, spending was only marginally up overall, with spending on electronics up 8.4% compared with the same period last year.

    Official retail spending data from the Office for National Statistics for November also indicated many shoppers resisted the lure of Black Friday discounts and the start of Christmas sales campaigns.

    But Ms Wehrle said the extension of pre-Christmas discounting and boom in online shopping meant Boxing Day sales “have really become less important” over the last few years.

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  • Weather tracker: Deep freeze grips Canada as US records warmest Christmas | Canada

    Weather tracker: Deep freeze grips Canada as US records warmest Christmas | Canada

    Northern Canada has been gripped by an intense and prolonged cold spell, with temperatures hovering between -20C and -40C for weeks. On Tuesday, Braeburn in the Yukon recorded -55.7C, its coldest December temperature since 1975.

    Meanwhile, Mayo and Dawson endured 16 consecutive nights below -40C, with Mayo plunging to -50.4C on Monday. Whitehorse also recorded 10 nights when temperatures dropped below -30C.

    The deep freeze spread farther south over the festive period. On Christmas Day, overnight temperatures in Edmonton fell below -28C, while Boxing Day was expected to bring lows of at least -20C across many regions, including Edmonton, Montreal, Ottawa and Quebec.

    The severe cold is forecast to persist into the new year. Officials have warned that the Yukon could face electricity outages in the coming days, as the territory’s power grid comes under strain from record-high energy demand.

    The prolonged chill has been caused by the polar vortex remaining anchored over Canada for much of December, allowing bitter Arctic air to spill south. Next week, the cold air mass is expected to retreat north gradually, enabling milder Pacific air to move across the US and into parts of southern Canada.

    In stark contrast, parts of the US experienced their warmest Christmas Day on record as temperatures soared about 15-30C above the seasonal average. In many areas, conditions felt more typical of April or May than late December.

    Several states set Christmas Day temperature records. In Oklahoma, Oklahoma City hit 25C on Tuesday, surpassing the previous peak of 22C set in 1982. Cities including Austin and Dallas, in Texas, and Charlotte, North Carolina, were also among those that recorded temperatures above 25C.

    Above-average warmth is expected to continue through Boxing Day and the days ahead, with unseasonable heat forecast to sweep into the south-eastern states later in the week.

    The warmth has been fuelled by a strong upper-level ridge extending from the desert south-west towards the north and east, creating a heat-dome effect. This pattern establishes a broad area of high pressure across much of the continent, trapping warm air near the surface. As air sinks through the atmosphere, it compresses and heats further, allowing unusually warm temperatures to build.

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