Politics 29th May 1975. London. Pro-marketeers meeting, with housewife Vicki Crankshaw telling of the extra costs of staying out of Europe, while Labour Home Secretary Roy Jenkins, himself a pro-marketeer looks on. The Common Market referendum was due to [Getty Images]

Politics, 29th May 1975, London, Pro-marketeers meeting, with housewife Vicki Crankshaw telling of the extra costs of staying out of Europe, while Labour Home Secretary Roy Jenkins, himself a pro-marketeer looks on, The Common Market referendum was due to be held on 5th June 1975 (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images) — see more

Politics, 29th May 1975, London, Pro-marketeers meeting, with housewife Vicki Crankshaw telling of the extra costs of staying out of Europe, while Labour Home Secretary Roy Jenkins, himself a pro-marketeer looks on, The Common Market referendum was due to be held on 5th June 1975 (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)