A man in his 20s was taken to Lynn’s Queen Elizabeth Hospital in the early hours of Friday morning after the van he was driving left the road and landed in a ditch.
The white Ford Connect van left the road and hit a ditch before colliding with trees on the A1122 in Stradsett.
It happened close to the junction with the A134 at around 2am.
The man was taken to hospital in a serious condition where he was given further treatment.
The van had been travelling towards Fincham. No other vehicle is believed to have been involved.
Police are appealing for witnesses to the crash, or to the manner of driving prior to the collision.
Roads policing officers are appealing for witnesses following a serious collision in Stradsett.
Witnesses are asked to contact PC Dave Moreland at Swaffham Roads Policing on 101.
The Lynn News is awaiting further updates on the man’s condition.