Police probe suspected Irish people-smuggling ring after 39 migrants are found frozen to death This article has some useful maps. I can't find a reliable list of the businesses at Eastern Avenue on the industrial estate. Ther is this: The Glade Business, Eastern Avenue, Waterglade Industrial Park, West Thurrock, Grays RM20 Commercial Properties to Let - Primelocation Photo of lorry looks like a Co Op vehicle to me but l'm not suggesting it is linked Bit more info here: Interesting Information for The Glade Business Centre, Eastern Avenue, Waterglade Industrial Park, West Thurrock, Grays, RM20 3FH Postcode Potential list of businesses here: can't comment on accuracy Eastern Avenue, Grays, RM20 3FH - Residents, Businesses, Information - 192.com Edit I suspect he was delivering. He probably thought it was a well easy job. Maybe someone else who took delivery opened the container? Someone must have needed to sign?