A child was left seriously injured after a crash brought a busy road to a standstill.

Now police are appealing for witnesses after the collision on the A20 at around 8.30pm on Saturday on the coast-bound carriageway between Swanley and Sidcup.

The appeal comes after a family of two adults and two children travelling in a Renault Traffic minibus were hurt in the crash.

It included a 12-year-old boy, who was treated at Kings College Hospital for serious abdominal injuries.

The boy is still in hospital but his injuries are not believed to be life-threatening.

The driver of a Renault Clio suffered concussion and minor head injuries.

Officers from the Kent Police Serious Collision Investigation Unit now want to hear from anyone who saw the crash, or vehicles involved in the moments just before.

"Thankfully there has been no loss of life, which could so easily have been the case" - Insp Martin Stevens

Inspector Martin Stevens said: "This was a very serious incident which blocked the carriageway and led to the closure of the A20 from Crittalls corner to the M25 junction.

"Thankfully there has been no loss of life, which could so easily have been the case.

"We would like to hear from anyone who witnessed the collision or who saw the vehicles being driven prior to the collision."

Anyone with information is asked to contact the witness appeal line on 01622 798538.