“Manipulative” Stephen Waterson will serve more than seven years after he crushed the three-year-old with a car seat.
Waterson, 26, inflicted irreversible brain injuries on Alfie Lamb, his girlfriend’s son, who was in the footwell behind him in 2018.
Waterson initially denied manslaughter but changed his plea to guilty before a retrial in September.
Alfie had been at his mother Adrian Hoare’s feet at the time. She was jailed for child cruelty in May.