Future engineering work

PAGE LAST UPDATED: 19/10/2019 00:52. 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.

Major modernisation work between London Paddington and Maidenhead until 05:00 Tuesday 8 May

Start date
05/05/2018  00:00
End date
Route affected
Download map of route afected

All Great Western Railway routes to / from London Paddington and also between Slough and Windsor & Eton Central, Maidenhead and Marlow and between Twyford and Henley-on-Thames

Heathrow Connect between London Paddington and Heathrow Airport

Heathrow Express between London Paddington and Heathrow Airport

TOC(s) affected
Great Western RailwayHeathrow Express

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%.

As a result of this, all lines are closed between Hayes & Harlington and Maidenhead.

Please note that Great Western Railway are running a further reduced service between Swindon and London Paddington this weekend. More details can be found here.

No trains will run between Hayes & Harlington and Maidenhead.

Trains will run to a reduced timetable between London Paddington and Hayes & Harlington. 

Replacement buses will run between:
  • Hayes & Harlington and Slough running non stop
  • Hayes & Harlington, Slough and Maidenhead
  • Hayes & Harlington and Maidenhead calling at all stations except Iver
  • Hayes & Harlington and Windsor & Eton Riverside
  • West Drayton, Iver and Langley
The following alterations will apply on the following routes:

Bristol / Cardiff Central / Swansea / Exeter St Davids / Plymouth / Penzance - trains are diverted between London Paddington and Swindon via (and not calling at) High Wycombe and Oxford. A reduced timetable will also be in operation. Trains will also run between Reading and Bristol Temple Meads / Exeter St Davids via Newbury.

Cheltenham Spa - trains originally scheduled to run to and from London Paddington will now only run between Swindon and Cheltenham Spa. 

Greenford - trains will run to a reduced timetable.

Marlow - trains will be retimed. Customers travelling direct between Maidenhead / Marlow and London should use connecting bus services between Maidenhead, Marlow and High Wycombe for Chiltern Railways trains to / from London Marylebone.

Newbury / Bedwyn - trains will run between Reading and Newbury / Bedwyn

Oxford / Worcester Shrub Hill / Hereford - customers travelling direct to / from Oxford and beyond should use Chiltern Railways trains between London Marylebone and Oxford to connect with Great Western Railway trains. 

Oxford (Local trains) - trains will run to an amended timetable between Maidenhead and Oxford with some trains serving Appleford, Culham and Radley. Most trains will be extended to run to / from Great Malvern / Hereford.

Reading - customers travelling direct between London and Reading should use South Western Railway trains between London Waterloo and Reading.

Weston-super-Mare - as a result of this engineering work and to ease congestion at Bristol stations, trains between Bristol Parkway and Weston-super-Mare will run between Bristol Temple Meads and Weston-super-Mare. Customers should use alternative trains between Bristol Parkway and Bristol Temple Meads.
Windsor & Eton Central - replacement buses will run between Slough and Windsor & Eton Riverside. Customers travelling direct between Windsor & Eton Central and London should use South Western Railway trains between Windsor & Eton Riverside and London Waterloo. Late evening buses will operate between London Paddington and Slough.

Check before you travel:

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

You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages

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


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.