Future engineering work

PAGE LAST UPDATED: 21/06/2018 00:01. Update now

See details of routes affected by planned engineering works, including when they take effect, maps of the affected area, alternative timetables, advice for alternative travel and real-time updates.

Buses replace trains between Southampton Central / Eastleigh and Portsmouth Harbour on Saturday 17 and Sunday 18 March

Start date
17/03/2018  00:00
End date
Route affected
Download map of route afected

Great Western Railway between Cardiff Central / Southampton Central and Portsmouth Harbour / Brighton

South Western Railway between London Waterloo / Southampton Central / Eastleigh and Portsmouth Harbour

Southern between London Victoria / Horsham and Southampton Central

TOC(s) affected
Great Western RailwaySouth Western RailwaySouthern

Engineering work is taking place between Eastleigh / St Denys and Portchester, closing all lines.

Great Western Railway:

Most Cardiff Central to Portsmouth Harbour services will start from terminate at Southampton Central. Replacement buses will run hourly between Southampton Central and Portsmouth Harbour.

Services between Cardiff Central and Brighton will start from Southampton Central or Westbury, or will be cancelled throughout. Customers for Brighton should use alternative Southern services.

Some Cardiff Central to Portsmouth Harbour / Brighton services will terminate at Westbury.

South Western Railway:

Replacement buses will run between Portsmouth Harbour and Eastleigh, and between Portsmouth Harbour and Southampton Central.

On both Saturday and Sunday, trains between Southampton Central and Portsmouth will not run, and trains between London Waterloo and Portsmouth will be amended to start from / terminate at Eastleigh.

On Sunday, an amended service will run between London Waterloo and Poole, making additional stops at Micheldever and Shawford to connect with bus services to Eastleigh.


Southern services between Brighton and Southampton Central will be diverted to start from / terminate at Portsmouth & Southsea, calling additionally at Fratton.

Check before you travel:

You can plan your journey using the National Rail Enquiries Journey Planner

You can find the location of your bus replacement by typing in your station here.


Non folding bicycles are not allowed on rail replacement bus services at any time. Folding bicycles are allowed if fully folded. For more information, please see here.

Project Information:

You can read more about engineering work and why it is necessary.