Motorists - avoid A27 at Cosham: There has been a single-vehicle crash on the eastbound carriageway near the junction for Portsmouth. A black Mini Cooper had come off the road and an officer sent to deal with the incident was subsequently struck by a white Vauxhall Corsa Van, and sustained serious injuries. Lanes one and two on the eastbound carriageway have been closed. The off slip road for Portsmouth has also been closed.

It is not currently known when these sections of road will re-open.

The westbound carriageway is not affected.

52-year-old man from Havant was arrested at the scene on suspicion of dangerous driving and is currently in police custody.