Politics 6th June 1975. London. Supermarket trolleys are used to help count the votes at Earls Court, London after the Common Market Referendum vote. The Common Market referendum was due to be held on 5th June 1975. [Getty Images]

Politics, 6th June 1975, London, Supermarket trolleys are used to help count the votes at Earls Court, London after the previouis day's Common Market Referendum vote. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images) — see more

Politics, 6th June 1975, London, Supermarket trolleys are used to help count the votes at Earls Court, London after the previouis day's Common Market Referendum vote. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)