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

The following GWR trains will not call at Burnham:

0620 (departing 0636) Reading to London Paddington
0638 London Paddington (starting 0646 from Ealing Broadway) to Reading

2353 Didcot Parkway to London Paddington

Replacement buses will run between Slough and Burnham, connecting into/out of trains at Slough.