A "tired" stretch limousine driver who killed a young child and caused a motorway pile-up has been jailed for six years.

John Woolston, who worked full time as a London bus driver, crashed into a line of cars that had stopped for road works, "skittling them like ninepins".

Victim Danyal Razzaq, aged two, was a passenger in his mother Shafica Macgregor’s Renault Clio when the tragedy happened on the M25, near Crockenhill on July 14 last year.

Maidstone Crown Court heard that while other traffic heading for the Dartford crossing slowed to a halt, the five-tonne Hummer Limo "carried straight on".

Mrs Macgregor, of Hampton, Middlesex, was taking Danyal and two brothers to their cousin’s birthday party in Gravesend.

Woolston, of Wyndham Road, East Ham, east London, denied causing death by dangerous driving, but was convicted.

He was banned from driving for 10 years.

Judge James O’Mahony told Woolston on Tuesday: "In my judgement, you were tired. You deliberately took that risk."