Future engineering work

PAGE LAST UPDATED: 28/01/2020 23:55. 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 Great Western Railway services to / from London Paddington from 21:00 on Saturday 4 and all day Sunday 5 January

Start date
04/01/2020  00:00
End date
Route affected
Download map of route afected

Between London Paddington and Cardiff Central / Greenford / Bristol Temple Meads / Oxford /  Plymouth / Penzance / Reading / Swansea / Worcester Shrub Hill

Between Maidenhead and Marlow

TOC(s) affected
Great Western Railway

Engineering work is taking place between London Paddington and Acton Main Line / Hayes & Harlington / Greenford, closing 2 out of 4 lines.


From 21:00:

- Trains will depart London Paddington up to 10 minutes earlier or later than usual.

- Some local Thames Valley services between London Paddington and Reading will also not run.

- Trains between London Paddington, West Ealing and Greenford will not run.

From 23:00, the following further alterations will apply:

- Trains between London Paddington and Didcot Parkway will not call at Burnham and Taplow. Buses will run between Slough, Burnham and Taplow to help with journeys. Please note, not all trains will have bus connections available.


Due to limited line capacity between London Paddington and Acton Main Line / Hayes & Harlington, throughout the day services will run to a revised and retimed timetable.

The train service between London Paddington and Cardiff Central / Swansea / Carmarthen will be reduced to one train per hour in either direction. Some trains will call additionally at Didcot Parkway.

Some trains between London Paddington and Bristol Temple Meads will call additionally at Slough and Didcot Parkway.

Most trains between London Paddington and Cheltenham Spa will only run between Swindon and Cheltenham Spa. Customers should use alternative trains between London Paddington and Cheltenham Spa.

Trains between London Paddington and Oxford / Great Malvern / Hereford will call additionally at Maidenhead.

Trains that normally run between London Paddington and Newbury / Bedwyn will only run between Reading and Newbury / Bedwyn with a few trains being cancelled.

Between 08:24 and 22:24, local trains between London Paddington and Didcot Parkway will run between Slough and Didcot Parkway.

Due to this engineering work the following trains between Maidenhead and Marlow will be amended:

  • 00:12 Marlow to Maidenhead is replaced by a bus between Bourne End and Maidenhead
  • 09:26 Maidenhead to Marlow is retimed to depart at 09:29
  • 09:55 Marlow to Maidenhead is retimed to depart at 09:56

Ticket acceptance:

Customers may use London Bus and London Underground services to help with journeys between London Paddington and Greenford.

Check before you travel:

You can plan your journey using the National Rail Enquiries Journey Planner

You can plan your journey on London Buses and London Underground by using the Transport for London Journey Planner

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%.