We're modernising the Great Western route, increasing capacity for passengers and freight; creating more reliable services and better stations. 

This is the biggest investment in the Great Western railway since Brunel built it more than 175 years ago. Modernising the route will improve the experience of everyone who uses it and stimulate economic growth in the South West and beyond.

This page explains the work we’re doing in Bath and North East Somerset and when it's due to take place. Electrification in the area has been deferred until the next control period (CP6), which runs from 2019 to 2024.

What we’re doing

We have been carrying out extensive improvements to the railway through Bath and North East Somerset, including major upgrades at Bath Spa and Keynsham stations in recent years. This has included platform and signalling upgrades, as well as modifications to bridges and other structures along the route to provide line clearance for new Intercity Express Trains.

Signalling upgrade at Bathampton Junction

We are enhancing our signalling system between Bristol and Corsham, with a significant focus on the Bathampton Junction area.

We will be replacing old signals with new, which will provide flexibility and more reliable railway operations.

We will be working midweek and weekend nights from 7 April until 31 July 2019; but the main upgrade tasks will be carried out during the weekend of 11 May.

During the dates below, our teams will be working around the clock:

Prior to main upgrade

  • 01:35 Sunday 7 April – 05:00 Monday 8 April
  • 01:30 Saturday 13 April – 04:00 Monday 15 April

Main upgrade weekend

  • 01:30 Saturday 11 May – 05:00 Monday 13 May

After main upgrade

  • 01:25 Sunday 23 June – 04:50 Monday 24 June
  • 01:25 Sunday 7 July – 04:50 Monday 8 July

During the main upgrade on the weekend of 11 May, we will be working between St Anne’s Park in Bristol and Corsham; disconnecting and removing the old signalling equipment. This will include removing a large signalling gantry at Bathampton Junction, as well as smaller signals in Oldfield Park and Corsham.

Our teams will be accessing the tracks though our compounds in Saltford, Westmoreland yard and Box. The majority of our teams will use Westmoreland sidings to park their vehicles during the work.

Download factsheet April 2019 (PDF)

Travel arrangements

On the following dates trains between Bristol Temple Meads and London Paddington will be diverted and won’t call at Keynsham, Oldfield Park, Bath Spa or Chippenham. Buses will replace trains at these stations.

  • Sunday 7 April
  • Saturday 13 and Sunday 14 April
  • Saturday 11 and Sunday 12 May

On Saturday 11 May, this signalling work will also mean early morning services will be affected with replacement buses in operation on some routes until 07:20.


For more information, visit GWR's website or National Rail Enquiries' website.

Trowbridge track renewal

Between April and June we are renewing a section of the railway in the Trowbridge area which will have some impact on train services for passengers on 6/7 April, 13/14 April and 11/12 May. For more information see our Wiltshire page.