Ethan Burdett, 67, of Ipswich Haven Marina, Ipswich, pleaded guilty to causing the death of four people due to careless driving when he appeared at Chelmsford Crown Court on Tuesday 16 April.
Roads Policing officers were called to the M25 in Waltham Abbey shortly after 6.15pm on 23 August 2021, following reports a lorry had collided with a minibus.