The East of England Ambulance service says 2 patients have been seriously injured in the A1 coach crash at Diddington.
It says they were taken to Addenbrooke's Hospital while a further eleven patients were taken to Hinchingbrooke Hospital with minor injuries.
The trust sent five ambulance crews and three rapid response vehicles to the scene.
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Saturday will be largely cloudy with a continued risk of heavy showers or thunderstorms. Sunday will be dry with sunny spells.
There continues to be a risk of thunder tonight and tomorrow but the weather will become drier and clearer by sunday.