Rail travellers using services between London and the Kent and East Sussex coast have been warned to check ahead with a new timetable pending.
South Eastern Railway is introducing the changes on 14 December.
It will see 29 extra services on the highspeed service between St Pancras International and Faversham.
Three new locomotives are joining the fleet, with some services getting extra carriages added.
Among the services to benefit will be commuter trains between Hastings and Charing Cross and Canon Street, and Dartford and Gravesend to Victoria.
There will also be extra peak time services from Maidstone East and Ashford to London.
The three new trains are Class 377s, bringing the total number in the operator’s fleet to 36.
Scott Brightwell from South Eastern Railway, said: “This latest timetable change meets rising demand by increasing services where needed and adding space for extra comfort at the busiest times.
“Customers can check their amended services now as journey planners have been updated online and full details of the changes can be found on our website.”