Future engineering work

PAGE LAST UPDATED: 23/11/2017 03:56. 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 London Paddington and Reading on Saturday 20 January

Start date
20/01/2018  00:00
End date
Route affected
Download map of route afected

'Thames Valley' services between London Paddington and Reading / Oxford / Didcot Parkway / Great Malvern

TOC(s) affected
Great Western Railway

Engineering work is taking place at various locations between London Paddington and Reading, closing 2 out of 4 lines on sections of the Great Western Mainline at Slough and Hayes & Harlington.

Thames Valley (local services)

Some trains between London Paddington and Reading will be re-timed to depart up to 10 minutes earlier than usual from London Paddington.

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:

The Great Western Route Modernisation project is the biggest investment in the Great Western railway since Brunel built it more than 150 years ago. Modernising the route will improve the experience of everyone who uses it and stimulate economic growth in the South West and beyond.

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%.