Late evening trains between Bristol Temple Meads and Cardiff Central will be amended as follows:

* The 1650 Penzance (2128 Bristol Temple Meads) to Cardiff Central will be diverted after Filton Abbey Wood to terminate at Bristol Parkway. Change at Bristol Temple Meads for a later rail connection to Patchway and Severn Tunnel Junction, and at Bristol Parkway for an alternative rail connection to Newport and Cardiff Central.
* The 2023 Portsmouth Harbour to Cardiff Central will terminate at Bristol Temple Meads. A replacement bus will run from Bristol Temple Meads to Cardiff Central.

* The 2159 & 2247 Cardiff Central to Bristol Temple Meads will not run. Replacement buses will run instead.

In some cases, passengers will need to use alternative scheduled rail services rather than the replacement buses. Please check your journey at nationalrail.co.uk

This work continues until approximately 1430 on Sunday 19 May - see separate item for full details.

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

Early morning trains between London Paddington / Reading and Newbury / Westbury will be amended as follows:

* 0806 Reading to Newbury will not run. A replacement bus will run as follows: Reading 0755 - Reading West 0803 - Theale 0818 - Aldermaston 0824 - Midgham 0828 - Thatcham 0835 - Newbury 0848
* 0751 London Paddington to Penzance will depart at 0752 and will not call at Newbury or Pewsey
* 0834 Reading to Bedwyn will start from Newbury at 0857
* 0851 London Paddington to Penzance will depart EARLIER at 0843, Reading 0909, and will call additionally at Newbury 0924 and Pewsey 0944

The 2115 Penzance to London Paddington will depart slightly EARLIER from Exeter St Davids at 0058.
The 2350 London Paddington to Penzance will arrive later at Exeter St Davids at 0344.