Upcoming Railway Engineering Work – Saturday 28 March to Thursday 2 April 2026 between Havant, Fareham and Portsmouth Harbour
Railway engineers will be completing signalling and track upgrades in the Portsmouth Area this Easter.
Buses will replace trains between Havant, Fareham and Portsmouth Harbour from Saturday 28 March to Thursday 2 April while the work takes place.
This latest phase will see an additional £120 million invested on the Portsmouth Direct Line. When the programme is completed in 2028, signalling will move from the Havant Area Signalling Centre and be controlled from the Basingstoke Rail Operating Centre. This will allow better communication between signallers and help the railway respond more quickly to incidents.
The work follows completion of the first phase of the Portsmouth Direct line which completed in 2025 and saw £129 million invested to upgrade signalling between Farncombe and Petersfield.
What work is taking place during the line closure
Network Rail is upgrading the signalling system in the Havant and Portsmouth area because some of the existing equipment is reaching the end of its life and is more prone to faults. In the past 12 months alone, signalling failures in the area have caused over 18,500 delay minutes.
During the six-day line closure engineers will carry out a range of improvements including:
- repairs to cable troughing between Farlington and Cosham to better protect signalling equipment
- structural repairs to Portcreek Viaduct, which connects the mainland with Portsmouth on the Isle of Portsea
- renewing 48 wheel timbers through Platform 2 at Portsmouth & Southsea station
- replacing a further 14 wheel timbers outside Portsmouth Harbour station
- tamping work to improve track alignment through the Portsmouth area
In total, engineers will carry out around 1,378 hours of work during the blockade.
Changes to train services
During the works, train services will change as follows:
South Western Railway trains to and from Portsmouth Harbour will start or end at Havant or Fareham.
Southern trains to and from Portsmouth Harbour will start or end at Havant. Services to Portsmouth & Southsea will go to Bognor Regis instead. Southern trains between Brighton and Southampton will run as normal.
Great Western Railway trains to and from Portsmouth Harbour will start or end at Fareham.
Replacement buses will run as follows:
- five buses per hour between Havant and Portsmouth Harbour, calling at Bedhampton, Hilsea, Fratton and Portsmouth & Southsea
- two buses per hour between Fareham and Portsmouth Harbour, calling at Portchester, Cosham, Hilsea, Fratton and Portsmouth & Southsea
Further line closures are planned around the late May Bank Holiday, with engineers returning again later in the autumn. More details will be announced closer to the time.
More information about the Portsmouth Direct Line upgrade can be found at: https://www.networkrail.co.uk/our-work/our-routes/wessex/portsmouth-direct-upgrade/









