On Saturday 18 May
The 2345 Didcot Parkway to London Paddington will terminate at Ealing Broadway at 0105. TfL Central line connections will be available from Ealing Broadway towards central London*

On Sunday 19 May
The 0638 London Paddington to Reading will start from Ealing Broadway at 0649. TfL Central line connections will be available from central London*
The 0620 Reading to London Paddington will depart at 0636 and run later throughout

* - the nearest Central line Tube station to London Paddington is Lancaster Gate, approximately 8-10 minutes walk from London Paddington

All day, most High Speed trains to and from London Paddington will be retimed. Many trains will depart EARLIER than usual.

Most fast trains between London Paddington and Oxford will not run (trains between London Paddington / Oxford and North Cotswolds stations WILL continue to run, but will not call at Radley). Additional trains will run between Didcot Parkway, Radley and Oxford.

Trains between London Paddington and Swindon / Bristol Parkway / Cardiff Central will call additionally at Slough, Maidenhead and Twyford.

All day, most local stopping trains from London Paddington to Reading and Didcot Parkway will only run between Reading and Didcot Parkway. Passengers at Slough, Maidenhead and Twyford should use services running between London Paddington and Swindon / Bristol Parkway / Cardiff Central (see above).

Passengers should check their journeys at nationalrail.co.uk

Trains between Bristol Temple Meads (or beyond) and Cardiff Central will either:

* be diverted to terminate at/start from Bristol Parkway and will not serve Patchway or stations in south Wales, or
* not run between Bristol Temple Meads and Cardiff Central

Limited replacement buses will run between Bristol Parkway and Newport. Some buses will call at Patchway and Severn Tunnel Junction.
Alternative rail connections will be available between Newport and Cardiff Central.

This work will also affect trains running between London Paddington and Bristol Parkway / Cardiff Central / South Wales - see separate item.

Passengers should check their journeys before travelling at nationalrail.co.uk

If you arrive at your destination 15 or more minutes late because your GWR train was delayed or cancelled, you can claim Delay Repay compensation. Please keep your ticket and visit GWR.com/DelayRepay

If you arrive at your destination 15 or more minutes late because your GWR train was delayed or cancelled, you can claim Delay Repay compensation. Please keep your ticket and visit GWR.com/DelayRepay

If you arrive at your destination 15 or more minutes late because your GWR train was delayed or cancelled, you can claim Delay Repay compensation. Please keep your ticket and visit GWR.com/DelayRepay