Seaford line upgrade

We're replacing old signalling between Lewes and Seaford with more reliable technology to reduce delays for passengers.

This is part of our ongoing investment in the Brighton Main Line and the railway on the south coast.

The signal boxes at Lewes, Newhaven Town and Newhaven Harbour will close and the signalling control of the line move to our state-of-the-art route operating centre at Three Bridges.

The project will be replacing old signalling equipment and replacing it with more modern, more reliable technology, which means there will be fewer delays for passengers in this area of the network.

Line closures

Thursday 7 March – Sunday 10 March 2019

Four day line closure affecting all trains via Lewes due to commissioning of the signalling equipment, when the old equipment is turned off and the new switched on.

For four days, from Thursday 7 March to Sunday 10 March, there are no trains between the following stations:

  • Wivelsfield – Lewes
  • Falmer – Lewes
  • Seaford – Lewes
  • Polegate – Lewes
  • Brighton – Falmer a shuttle train will be replacing normal service, running every 40 minutes.

During this time, buses will replace trains. There will be:

  • A stopping service between Brighton and Seaford calling at several stations.
  • A stopping service between Brighton and Polegate calling at Lewes.
  • A limited service between Haywards Heath to Polegate, calling at Cooksbridge and Lewes.
  • A stopping service between Haywards Heath and Lewes calling at Plumpton.
  • A limited stopping service between Lewes and Polegate calling at Glynde and Berwick.
  • A service between Polegate and East Grinstead.

Travel outside of the peak times where possible and allow more time for your journey. Some stations and alternative routes will be busier than usual. Other closures will take place at weekends. Always check before you travel by visiting National Rail Enquiries.

Additional weekend closures of the railway in the Lewes area, for signalling upgrades and other railway works, will take place on:

Sunday 17 March 2019

Buses will replace trains between Haywards Heath and Lewes, Lewes and Brighton, Lewes and Seaford and Lewes and Polegate. Services between Brighton and London will run as normal but there will be no trains west of Eastbourne via Lewes.

Please contact your train operator for more information or visit National Rail Enquiries.

Keeping you informed

We will be working with Southern on a passenger communications campaign to ensure all passengers affected by the closures have the information they need to plan ahead. Passengers can plan their journey at

Contact us

If you’re interested in finding out more about Seaford line upgrade please contact us by visiting our contact us page or by calling our 24-hour national helpline on 03457 11 41 41.