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A view of a Shell-BP petrol station at the headquarters of Project D on the London to Yorkshire Motorway (the M1), near Watford Village. Petroleum companies Royal Dutch Shell (Shell) and British Petroleum (BP) merged their UK marketing operations between 1932 and 1976. M1 Motorway, Watford, Daventry, Northamptonshire, 23/07/1958. Creator: John Laing plc. (KEYSTONE/HERITAGE IMAGES/HISTORIC ENGLAND)