Part of the A12 was shut for more than four hours overnight following a serious crash. 

The northbound carriageway was closed between junction 29 for Colchester and junction 30 at Stratford Mary, on the Suffolk border, at about 12.10am on Sunday. 

National Highways said a serious collision involving a car and motorcycle had taken place. 

A spokesman said the road was expected to be closed for some time. 

The carriageway reopened at about 4.20am.