ESSEX Police are appealing for a key witness of a serious collision which has seen people taken to hospital for treatment.

Officers were called to the scene of a serious collision in Cock Clarks, near to Cold Norton.

The incident “involved a number of vehicles”, including a BMW, and took place in Hackmans Lane at 2.30pm today, Sunday, November 24.

Essex Police said a number of people have been taken to hospital for urgent treatment.

A spokesman said: “The road remains closed while investigative and recovery work is concluded, and a number of diversions are available.

“We’re now appealing for a specific driver to come forward who we believe may be a key witness to the incident.

“The has been described a small Mini-type vehicle, which is dark colour and being driven by what witnesses have described as an older lady.

“To be clear, we’re trying to contact this person as a witness to the incident.

“If this is you, please get in contact with us as soon as you possibly can.

“You can let us know by using our Live Chat service which is available 24 hours-a-day, seven days-a-wee or by calling 101.

“Please cite incident 865 of 24 November.”