We advice you check your journey before traveling with us today
There is a good service across our network
Book early to get our best deals.
Reservations for GWR West local services, including Cardiff - Portsmouth, are now open as the following:
Booking six months in advance
GWR are now able to offer an extended booking period for weekday travel only for high-speed services operating to/from London Paddington (including the Night Riviera Sleeper service).
Reservations are available on these journeys on the following dates:
We don't expect our timetable to change on these dates, but check your journey 4 weeks before you travel.