GWR will be introducing the biggest timetable change since 1976. The change will bring faster, more frequent services with more seats. As well as this, new services will be introduced. For more information, see the new timetable from GWR.

GWR will be conducting electrification works to Cardiff on various weekends until Sunday 20 October. For more information, see the electrification information from GWR.

GWR will be conducting track renewals on Saturday 28 September, Sunday 29 September, Sunday 6 October and Sunday 13 October. The works will affect services between Bristol Temple Meads, Weston-super-Mare and Taunton. For more information, see the planned engineering information from GWR.

Some signal upgrades on the railway at Bristol Parkway train station will be conducted on Saturday 26 October and Sunday 27 October. Some trains will be diverted and buses will be replacing some services to and from Cardiff Central. For more information, see the planned engineering information from GWR.

GWR will be conducting tunnel and track maintenance in the Taunton area which will affect services between Weston-super-Mare, Castle Cary and Tiverton Parkway from Saturday 9 November until Thursday 14 November. For more information, see the planned engineering information from GWR.

GWR will be conducting upgrade works over the Christmas Period. The works will affect services between Bristol Parkway, Cardiff Central and Bridgend from Friday 27 December until Wednesday 1 January. Additional upgrade works are also planned during this period affecting trains to and from London Paddington, Gatwick Airport and Salisbury. For more information, see the Christmas engineering information from GWR.