A five-year-old boy was seriously injured in a car accident on Saturday in Spring Grove Road, Isleworth.

The boy, whose condition is not believed to be life threatening, was taken by ambulance with West Middlesex Hospital with serious head injuries at about 12.15pm after he strayed into the road was involved in a collision with a BMW car.

Police sealed off the road until about 3pm while they cleared the scene but no one was arrested.