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Planned Engineering Work

Thames Valley Summary

There may be other changes to long distance services, and to Basingstoke, Bedwyn, Oxford and Redhill/Gatwick Airport.

There are major works around Bristol Temple Meads during September.

Visit the GWR web site for more details.

Saturday 28 August to Friday 3 September 2021

Saturday The 2345 Didcot Parkway to London Paddington will terminate at Slough.
Sunday The 0838 Reading to Didcot Parkway will depart at 0854 and run later throughout.
Saturday 28 August to Friday 3 September 2021
Sunday The 0012 Marlow to Maidenhead will terminate at Bourne End. A replacement bus will run from Bourne End to Maidenhead.
Tuesday to Friday The 0018 Henley-on-Thames to Reading will terminate at Twyford. A rail connection will run from Twyford to Reading.
Saturday The 2345 Didcot Parkway to London Paddington (terminating at Slough) will not call at Taplow or Burnham. Buses will run between Slough, Burnham and Taplow.
Sunday from approximately 2345 until end of service Trains will not call at Burnham. Buses will run between Slough and Burnham.
Monday to Thursday from approximately 2345 each evening until 0500 next day Trains will not call at Burnham or Taplow. Buses will run between Slough, Burnham and Taplow.

Saturday 4 to Friday 10 September 2021

Sunday until approximately 1300 Most High Speed services from London Paddington will depart up to 8 minutes EARLIER than usual. Some local services from London Paddington to Didcot Parkway will be retimed and will not call at Ealing Broadway or Hayes & Harlington. Passengers should use alternative TfL Rail services.
Sunday from approximately 2115 until 2230 A few High Speed and local services from London Paddington will be retimed later.
Monday to Thursday from approximately 2030 until end of service Most High Speed services from London Paddington will arrive a few minutes later at Reading and at stations beyond. Most High Speed services to London Paddington will arrive a few minutes later than usual. Some local trains will also be retimed by a few minutes.
Monday to Thursday The 2008 Didcot Parkway to London Paddington will terminate at Reading. Passengers should use other services to complete their journey. The 2318 London Paddington to Oxford will call additionally at Didcot Parkway.
Monday The 0500 Oxford to Didcot Parkway will not run. The 0520 Oxford to London Paddington will depart EARLIER at 0516 and call additionally at Radley.
Monday to Thursday The 2057 Maidenhead to Bourne End, 2112 Bourne End to Marlow and 2112 Bourne End to Maidenhead will all run 1 or 2 minutes later.
Monday to Thursday The 2146 Twyford to Henley-on-Thames and 2201 Henley-on-Thames to Twyford will run 1 minute later.

Saturday 11 to Friday 17 September 2021

Sunday The 0929 Maidenhead to Marlow and 0955 Marlow to Maidenhead will run 1 minute later than usual.
Monday to Thursday The 2146 Twyford to Henley-on-Thames and the 20:44 & 22:01 Henley-on-Thames to Twyford will run a few minutes later than usual.
Tuesday to Thursday The 0018 Henley-on-Thames to Reading will terminate at Twyford. A rail connection will run to Reading.
Sunday All day, buses will replace trains between Oxford and Banbury.
Monday to Thursday The 2146 Twyford to Henley-on-Thames and the 20:44 & 22:01 Henley-on-Thames to Twyford will run a few minutes later than usual.
Tuesday to Thursday The 0018 Henley-on-Thames to Reading will terminate at Twyford. A rail connection will run to Reading.
Sunday All day, buses will replace trains between Oxford and Banbury.
Monday to Friday The 2350 London Paddington to Reading will not call at Burnham and Taplow.
Tuesday to Thursday The 0018 Reading to London Paddington will not call at Taplow and Burnham.
Tuesday to Friday The 0034 London Paddington to Reading will not call at Burnham and Taplow.
In all cases, replacement buses will run between Slough, Burnham and (on Monday to Saturday only) Taplow.

Saturday 18 to Friday 24 September 2021

Saturday from approximately 2215 until end of service Some trains departing London Paddington will be retimed, in some cases EARLIER than usual. The 2345 Didcot Parkway to London Paddington will terminate at Slough. A replacement bus will run from Slough to London Paddington.
Sunday All day, most High Speed services departing London Paddington will be retimed, in some cases EARLIER than usual. Most trains towards London Paddington will arrive later than usual. Most stopping trains FROM London Paddington TO Didcot Parkway will depart a few minutes later than usual and will not call at Ealing Broadway or Hayes & Harlington. Passengers travelling to / from these stations should use alternative TfL Rail services. Stopping trains FROM Didcot Parkway TO London Paddington will run a few minutes later from Slough to London Paddington.
Monday to Thursday from approximately 2030 until end of service Most High Speed services from London Paddington will be retimed a few minutes later after leaving London Paddington. Most trains towards London Paddington will arrive later than usual. Some stopping trains between London Paddington, Reading and Didcot Parkway will also be retimed by a few minutes. The 2008 Didcot Parkway to London Paddington will terminate at Reading.
Monday to Thursday The 2057 Maidenhead to Bourne End, 2112 Bourne End to Marlow and 2112 Bourne End to Maidenhead will all run 1-2 minutes later throughout. throughout.
Saturday The 0034 London Paddington to Reading, 0018 Reading to London Paddington and 2345 Didcot Parkway to London Paddington will not call at Burnham and Taplow. Replacement buses will run between Slough, Burnham and Taplow.
Sunday The 2354 London Paddington to Reading and 2353 Didcot Parkway to London Paddington will not call at Burnham.
Replacement buses will run between Slough and Burnham.

Saturday 25 September to Friday 1 October 2021

Saturday from approximately 2145 All services to/from London Paddington are subject to alteration. Some trains will depart EARLIER than usual. Some late evening trains TO London Paddington will terminate at Reading or Slough. In a few cases, onward connections to London Paddington will be by replacement bus.
Sunday Until approximately 1200, there will be no GWR trains to or from London Paddington. High Speed services will not run between London Paddington and Reading. Passengers should use South Western Railway services between London Waterloo and Reading, or Chiltern Railways services between London Marylebone and Oxford. Stopping services will not run between London Paddington and Slough. Passengers should use London Underground Central line services to travel to/from Ealing Broadway, then replacement buses between Ealing Broadway and Slough, or South Western Railway services between London Waterloo and Windsor & Eton Riverside. GWR tickets will be valid on all suggested alternative routes. From approximately 1200 and for the rest of the day, a revised service will run to / from London Paddington. Most High Speed services FROM London Paddington will depart EARLIER than usual. Stopping trains FROM London Paddington to Didcot Parkway will not call at Ealing Broadway or Hayes & Harlington. Passengers for these stations should use TfL Rail services.
Monday to Thursday from approximately 2345 until end of service Buses will replace trains between Didcot Parkway and Oxford.
Tuesday to Friday The 0354 Oxford to Reading will depart EARLIER at 0352.
Saturday The 2128 Greenford to London Paddington will terminate at Ealing Broadway. A rail connection will run from Ealing Broadway to London Paddington
Saturday from approximately 2130 Most trains between Twyford and Henley-on-Thames in both directions will run a few minutes later than usual to maintain connections at Twyford.
Monday to Thursday The 2146 Twyford to Henley-on-Thames and the 2044 & 2201 Henley-on-Thames to Twyford will run a few minutes later than usual.
Tuesday to Friday The 0018 Henley-on-Thames to Reading will terminate at Twyford. A rail connection will run from Twyford to Reading.
Saturday The 2345 Didcot Parkway to London Paddington (terminating at Slough) will not call at Taplow and Burnham. Replacement buses will run between Slough, Burnham and Taplow.
Sunday from approximately 2345 until end of service Trains will not call at Burnham. Replacement buses will run between Slough and Burnham.
Monday to Thursday from approximately 2300 and Friday from approximately 2359 until end of service Trains will not call at Burnham and Taplow. Replacement buses will run between Slough, Burnham and Taplow.


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Last updated 26th August 2021