Their car was shunted underneath the back of a heavy goods vehicle and crushed to a third of its size, immediately killing the family, from Bedfordshire, at the scene on the A34 dual carriageway north of Newbury in Berkshire.

Kroker, from Andover, Hampshire, had pleaded guilty to four counts of causing death by dangerous driving and one count of causing serious injury by dangerous driving at Reading Crown Court on October 10.

He was sentenced at the same court on Monday.