Details now available here -
https://www.gwr.com/travel-updates/planned-engineering/swindon201727 to 29 May and 10 to 11 June
Network Rail will be undertaking work in the Swindon area to prepare for our new trains which enter service later this year. As a result of this, train services through Didcot Parkway, Swindon, Chippenham and Bristol Parkway will be amended.
High speed services between London, Bristol and South Wales will be diverted and rail replacement buses will replace trains on routes through Swindon.
Plan your journey here
27 and 29 May, 10 June
Changes to services
between London Paddington and Bristol Temple Meads - Two high speed trains each hour, one of which continues to or starts from Swansea, and will call at Patchway instead of Bristol Parkway
customers for Bristol Parkway should change at Bristol Temple Meads
customers for Chippenham should change at Bath Spa
between London Paddington and Swansea - One high speed train each hour, calling at Patchway instead of Bristol Parkway
between Chippenham and Bristol Temple Meads - One high speed train each hour
between Chippenham and Westbury - One local train every two hours
between Swindon and Cheltenham Spa - One local train each hour
between London Paddington and Oxford - Two trains each hour, calling additionally at Didcot Parkway
between Reading and Newbury/Bedwyn - Some trains will be retimed
between Westbury and Bristol Temple Meads - Some trains will be retimed
Rail replacement services
between Reading and Swindon - Two coaches each hour, one of which continues to or starts from Chippenham
between Reading and Chippenham - One coach each hour
between Didcot Parkway to Patchway - One coach each hour, calling at Swindon and Bristol Parkway
28 May and 11 June
Changes to services
between London Paddington and Bristol Temple Meads - Two high speed trains each hour, one of which continues to or starts from Swansea, and will call at Bristol Parkway
customers for Chippenham should change at Bath Spa
between London Paddington and Swansea - One high speed train each hour, calling at Patchway instead of Bristol Parkway
between Chippenham and Bristol Temple Meads - One high speed train each hour
between Chippenham and Westbury - One local train every two hours
between London Paddington and Didcot Parkway - Two trains each hour, one of which continues to or starts from Oxford
Rail replacement services
between Reading and Swindon - Two coaches each hour, one of which continues to or starts from Chippenham
between Reading and Chippenham - One coach each hour
between Didcot Parkway and Bristol Parkway - One coach each hour, calling at Swindon