An amended timetable is in place affecting some journeys between London and Penzance, London and Swansea, and on some other GWR routes. Where trains are able to run they are expected to be very busy. This is expected to be compounded by strikes planned by the RMT on the SWR network.
Customers should check their journeys here before travelling as some changes will be made at short notice.
Those with tickets for travel on Sunday 15 December will be allowed to travel on Monday 16 December when GWR will be operating its full timetable.
The usual compensation arrangements are in place should customers be delayed, and customers who choose not to travel will be entitled to a refund. GWR is offering to waive the administration fee for those who choose not to travel.
Ticket restrictions have also been lifted and customers can travel on earlier services.
How will this affect my journey?
In order to keep passengers moving, some London Paddington to Penzance services will terminate at Exeter, where customers will be able to change for local services towards Plymouth and Penzance. Services between Exeter and Plymouth will be supported by additional road vehicles; adding up to an hour on journey times.
On the route between London Paddington and South Wales there will be reduced service.
On the route between London Paddington and Bristol Temple Meads a half-hourly service will be in operation.
Direct trains between Cheltenham and London Paddington will terminate at Swindon, where customers will be able to catch a train service onwards to London.
The amendments have come about because of the unusually high number of rail staff are not available to work. While newer GWR contracts include Sunday working, not all railway workers are contracted to work on Sundays. GWR is working with colleagues and trade unions to make Sunday contracted hours more consistent across the business.