Future engineering work

PAGE LAST UPDATED: 30/11/2020 08:17. 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.

Amended service between Cosham and Southbourne on Saturday 12 and Sunday 13 December

Start date
12/12/2020  00:00
End date
Route affected
Download map of route afected

Great Western Railway between Cardiff Central and Portsmouth Harbour and between Bristol Temple Meads and Brighton

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

Southern between London Victoria / Brighton and Southampton Central 

TOC(s) affected
Great Western RailwaySouth Western RailwaySouthern

Engineering work is taking place between Cosham and Southbourne and between Petersfield and Portsmouth Harbour, closing some lines.

Please select the relevant link for more information

Great Western Railway


To Brighton:

The 06:50 Portsmouth Harbour to Brighton will not run. Customers should use alternative Southern rail / road services.

The 10:52 Great Malvern to Brighton will divert after Cosham to Fratton, Portsmouth & Southsea and Portsmouth Harbour. Change en-route for road / rail services to stations to Brighton.

From Brighton:

The 09.00 Brighton to Great Malvern and the 17:00 Brighton to Bristol Temple Meads will start from Portsmouth Harbour, calling Portsmouth & Southsea and Fratton, before regaining normal route at Cosham. Customers should travel on earlier than normal train times from Brighton and stations to Havant to connect en-route with these trains.


Trains between Cardiff Central / Bristol Temple Meads and Brighton will not operate to / from Brighton. Customers should use Portsmouth Harbour services changing en-route for alternative road / rail services for South Coast stations and Brighton.

Certain trains will call additionally (on request) at Dilton Marsh.

South Western Railway

South Western Railway will operate an amended timetable, with some services calling additionally at Liphook and Liss.

Buses will replace trains between Petersfield and Portsmouth Harbour.


It is not yet known how Southern will be affected by this engineering work.

Check before you travel

If you are travelling with Great Western Railway, please use the National Rail Enquiries Journey Planner

Although journey planners are showing correctly, your journey may be subject to alteration at short notice due to the Coronavirus outbreak. Please check before your journey.

If you are travelling with South Western Railway or Southern, these changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.

Replacement bus travel advice

For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use this page.

You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages.