Greater Anglia had announced that all lines were blocked after an incident between Chadwell Heath and Goodmayes. A spokesperson for the train operator said: "Due to a trespass incident in the Chadwell Heath area services are disrupted. Trains to and from Liverpool Street and Ipswich were affected. Trains from Liverpool Street to Norwich, Clacton, Colchester Town, Braintree and Southend were also impacted. A spokesperson for Greater Anglia said: "Train services running through these stations are returning to normal, but some services may still be cancelled, delayed by up to 25 minutes or revised.