Network Rail is advising passengers to check before travelling later this month, as services will be disrupted as it replaces more than 10,000 wires in Gloucester signal box.
South Eastern Railway has revealed that passengers across Kent and South East London will benefit from improved train services and more seats with its new timetable operating from Sunday 14 December.
At the end of October, train services between Clapham Junction, Willesden, and Watford Junction will be disrupted due to Network Rail engineering work.