Portsmouth Direct Line Upgrades: buses replace trains to / from Portsmouth Harbour from Saturday 28 March to Thursday 2 April
Engineering work details
Starts Saturday 28 March 2026 to Thursday 02 April 2026
Train operators affected
Route(s) affected
Great Western Railway between Cardiff Central / Bristol Temple Meads and Portsmouth Harbour, and between Cardiff Central / Bristol Parkway / Bristol Temple Meads and Portsmouth & Southsea
South Western Railway between London Waterloo / Eastleigh / Woking / Guildford / Fareham and Portsmouth Harbour, and between Southampton Central and Portsmouth & Southsea
Southern between London Victoria and Portsmouth & Southsea / Portsmouth Harbour, between Gatwick Airport and Portsmouth & Southsea / Portsmouth Harbour, between Brighton and Portsmouth & Southsea / Portsmouth Harbour and between Littlehampton and Portsmouth & Southsea / Portsmouth Harbour
Description
Engineering work is taking place between Fareham and Portsmouth Harbour, closing all lines. Background information on the work can be found below.
Great Western Railway:
Buses will replace trains between Fareham and Portsmouth Harbour
South Western Railway:
Buses will replace trains between:
Fareham and Portsmouth Harbour
Havant and Portsmouth Harbour
Southern:
Buses will replace trains between:
Fareham and Portsmouth Harbour
Havant and Portsmouth Harbour
These buses will be operated by South Western Railway, however Southern tickets will be accepted at no extra cost.
Trains will run between Brighton and Southampton Central, and between London Victoria and Havant.
Background information:
Network Rail will be strengthening critical pieces of infrastructure in the Portsmouth area.
At Portcreek Viaduct between Portsmouth and Cosham, which was constructed in 1897, Network Rail are reinforcing beams and restoring the structural integrity of the bridges. There will also be track replacement work at Portsmouth & Southsea station, the renewal of 62 wheel timbers across St George’s Road Bridge and Landport Viaduct, and track maintenance at St George’s Road Bridge to provide smoother train journeys and reduced wheel sound.
More details on this project are available on the Network Rail website.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement bus travel advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.
You can find the pick-up and set-down location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.
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