Trains between Swindon and Newport will stop at Gloucester instead of Bristol Parkway
People using the railway network around the West of England are being warned of disruption as "vital" work to the Severn Tunnel's overhead power lines is due to start.
The tunnel, which links England and Wales, will be closed from Monday 9 June for 11 days, until 20 June, with reduced train services in place.
Trains between London and South Wales will stop at Gloucester instead of Bristol Parkway and replacement buses are planned to operate between Bristol Parkway and Newport, as well as Cardiff Central.
A limited train service will still run between London Paddington and Bristol Parkway.
Rail passengers travelling between Bristol and South Wales are being advised to change at Gloucester or Cheltenham Spa, where trains will still be running.
Network Rail programme director Ross Mahoney said: "All of this work is vital to ensure the continued safe and reliable running of the railway."

More news stories for Bristol
Watch the latest Points West
Listen to the latest news for Bristol
Engineers will be carrying out work to the overhead lines, which power trains through the Severn Tunnel, and where track was replaced last summer, Network Rail said.
It will also be working to replace track, sleepers and stone in the Stoke Gifford area, as well as renewing points in Filton.
While the line is closed, vegetation will also be cleared from the Severn Beach area of South Gloucestershire.
The same work, focused on South Gloucestershire and the Severn Tunnel, will take place on 29 June until about 16:00 BST, with train services impacted in a similar way.
Network Rail is also warning that on 15 June replacement buses are planned between Bristol Parkway and Cardiff Central.
GWR trains will run between London Paddington and Bristol Parkway, as well as between Newport and Swansea or Carmarthen.
Tell us which stories we should cover in Bristol
Follow BBC Bristol on Facebook, external, X, external and Instagram, external. Send your story ideas to us on email or via WhatsApp on 0800 313 4630.
How you maintain one of the world's oldest tunnels
The tunnel that links beer, Scuba diving and Oasis
Network Rail
Israel is accused of the gravest war crimes – how governments respond could haunt them for years to come
Trump deploys National Guard to LA after clashes over immigration raids
Labour's Peter Kyle vows government will deliver on missions in Spending Review
Israel is accused of the gravest war crimes – how governments respond could haunt them for years to come
Trump-Musk row heightens fears over Nasa budget cuts
'I burst into tears': How airline carry-on confusion triggered legal row
Top of the crops: Famous faces star in veggie lookalike show
Our mum went to jail for stealing our inheritance
Italian citizenship referendum polarises country
Families of Ukraine's missing fear peace will not bring them home
Doctors trialling 'poo pills' to flush out dangerous superbugs
Politics Essential: Get the latest news and analysis delivered to your inbox every weekday
How Tom Cruise survived passing out on the wing of a biplane
Exploring iconic songs that were once banned by the BBC
A purr-fect short history of cats on film
How can I freshen my breath?
EastEnders star suspended over 'unacceptable' language
Colombia presidential hopeful shot in head at rally
Our mum went to jail for stealing our inheritance
Trump-Musk row heightens fears over Nasa budget cuts
'I burst into tears': How airline carry-on confusion triggered legal row
Israel is accused of the gravest war crimes – how governments respond could haunt them for years to come
'Army too small' and Yusuf's return to Reform
Doctors trialling 'poo pills' to flush out dangerous superbugs
'I couldn't imagine not teaching full-time – until I had my baby'
Spending Review to include £86bn science and tech package
Copyright © 2025 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

source