The improvement project will focus on the southern end of the Brighton Main Line between Three Bridges and Brighton. Major engineering work is planned for the Victorian-era tunnels and the railway which runs through them. The unprecedented access to this part of the rail network provided by these planned closures will allow our engineers to renew and upgrade a part of the railway responsible for many delays. The programme of works will involve stemming leaks into the tunnels and improving drainage, upgrading or replacing the third rail power system and signalling, replacing track and sets of points, which enable trains to switch between tracks and replacing fencing and improving security to deter trespassers.

How this will affect you

This will mean significant changes to train services across the Southern, Gatwick Express and Thameslink networks and longer journey times for some passengers. No trains will run between Three Bridges and Brighton or between Three Bridges and Lewes on these dates. Brighton and stations to the west will have trains to and from London, but these will be diverted via Littlehampton and Horsham. There will be no direct trains to London from Lewes or Eastbourne between these dates.

Plan ahead

Please allow considerably more time for your journey and you should expect to use either diverted trains via longer routes or a replacement bus or coach to connect with train services.

Key dates

2019 : March - Sat 2 & Sun 3, Sat 23 & Sun 24, Sat 30 & Sun 31. April - Sat 6 (rescheduled - date to be confirmed) & Sun 7. May - Sun 5 (1.20-9.30am only)

Journey Impacts

Three Bridges and Brighton
There will be no trains.
Three Bridges and Lewes
There will be no trains.
Brighton and Hove
Trains will run from Brighton and Hove to London. These will be diverted via Littlehampton.
Brighton, Lewes and Eastbourne
Trains will run on the east coastway routes but no direct services to London.

Key Benefits

The Brighton Main Line, connecting the Sussex coast with Gatwick Airport and London, serves 300,000 passengers each day. These works will help improve performance and provide a better service on this key route. Without the work reliability will deteriorate over time, leading to more delays.
Improved performance
Boosting reliability
Better punctuality
Fewer delays

Ticket acceptance

During the closures rail tickets will be accepted on a wide range of alternative rail and bus services.


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