Police are appealing for witnesses following a collision between a coach and a lorry on the A1 yesterday (Sunday).
It happened on the northbound carriageway at Diddington, south of Buckden, at around 5.30am.
The coach had been returning to Newcastle-upon-Tyne from London. 11 people suffered serious injuries and 35 suffered minor injuries. Two people remain in hospital.
Sergeant Gordon Murray said: "I would appeal for witnesses to the collision or anyone who saw the vehicles in the moments leading up to the incident."
Anyone with information should contact the roads policing unit on 101.
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