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 call at Slough. Slough will be served by additional calls in other services (see below).

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

Across the GWR network, some trains may be altered / cancelled due to the May Day Bank Holiday.

In particular, the following trains to or from London Paddington will not run:

0341 Swansea to London Paddington
0510 Bristol Temple Meads (via Westbury) to London Paddington
0533 Bedwyn to London Paddington
0612 Frome to London Paddington
0739 Reading to London Paddington
0838 London Paddington to Westbury
0920 Newbury to London Paddington
1523 London Paddington to Worcester Foregate Street
1808 London Paddington to Frome (will run from London Paddington to Newbury)
2317 Reading to London Paddington