Future engineering work

PAGE LAST UPDATED: 24/02/2018 02:32. Update now

See details of routes affected by planned engineering works, including when they take effect, maps of the affected area, alternative timetables, advice for alternative travel and real-time updates.

Amended service between Didcot Parkway and Bristol each night from Monday 11 to Thursday 14 December

Start date
11/12/2017  00:00
End date
Route affected

Trains between London Paddington and Exeter St Davids / Bristol Temple Meads / Swansea / Cardiff Central / Taunton

TOC(s) affected
Great Western Railway

Engineering work is taking place in connection with the Great Western Mainline Route Modernisation project, each night between Didcot Parkway and Chippenham / Bristol Parkway.

Monday to Thursday

After approximately 21:30, trains to Exeter St Davids, Swansea and Bristol Temple Meads will divert between Reading and Bath Spa. Trains will not be able to call at Didcot Parkway, Swindon and Chippenham.

Customers should change at Reading for a bus to Swindon and Chippenham. Additional stops will be made at Didcot Parkway on other services. Buses will also run for connections from Swindon, Didcot Parkway and Chippenham.

The 21:00 Cheltenham Spa to Swindon service will be extended to call at stations to Bristol Temple Meads.

The 21:29 Taunton to London Paddington service will divert between Chippenham and Reading, not calling at Swindon and Didcot Parkway. Road transport will run between Chippenham and Swindon, Didcot Parkway.

An additional service will run at 23:03 from Chippenham to Bath Spa and Bristol Temple Meads.

Check before you travel:

These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.


Non folding bicycles are not allowed on rail replacement bus services at any time. Folding bicycles are allowed if fully folded. For more information, please see here.

Project Information:

Network Rail are electrifying one of Britain's oldest and busiest railways, providing greener, more reliable journeys and improving connections across southern England and South Wales: London and Bristol, including Cardiff, Newbury and Oxford. This project is also part of the London Railway Upgrade Plan, creating new connections and increasing capacity in peak hour by 30%.