All lines have now reopened after a person was hit by a train at Seven Kings during this evening's rush hour.
The person was hit at Seven Kings near Ilford, blocking all Greater Anglia lines, including Southend Victoria to London Liverpool Street.
Train services running through Seven Kings may be cancelled or delayed by up to 45 mins at short notice.
TfL Local Buses, TfL Underground, c2c and First Capital Connect are allowing Greater Anglia customers to use their services.
Greater Anglia says staff are working as fast as possible to restore services to normal and in a statement on its website it thanks customers for their "patience and understanding."