A woman injured in a crash on the A11 was today (Monday) in a critical and unstable condition in hospital.

The woman was airlifted to Addenbrooke's, in Cambridge, on Friday after the black Mercedes she was travelling in crashed with a white Scania coach carrying 48 people, mostly year 10 teenagers, from Oaks Park High School in Newbury Park, who were returning home to London following a field trip in Norfolk.

A further eight people were taken to hospital, including five schoolchildren aged 14 and 15 from the coach who were treated for bumps and bruises at West Suffolk Hospital in Bury St Edmunds following the 1.24pm crash, but were since discharged.

The other three casualties were women who had also travelled in the Mercedes from London, one of whom was taken to the Norfolk and Norwich University Hospital (NNUH) and the other two airlifted to Addenbrooke's.

One woman suffered minor injuries and two, including the woman taken to the NNUH, were said to be in a serious but stable condition.

On Friday, South West Norfolk MP Elizabeth Truss said she would be writing to roads minister Mike Penning in the light of the crash to ask for a precise date from the Department for Transport for when the dualling work will start.

Sgt Bob Patterson, of Suffolk Police serious collision investigation team, said the cause of the crash was still being investigated, but the said the collision between the coach, operated by a Milton Keynes firm and car was a 'head on impact.'

Anyone who witnessed the crash is asked to contact Suffolk Police on 101.