LONDON, ENGLAND – JUNE 08: British Prime Minister David Cameron and former Prime Minister Baroness Thatcher leave from Number 10 Downing Street following her visit on June 8, 2010 in London, England. Baroness Thatcher served as Prime Minister of the UK from 1979 to 1990. (Photo by Oli Scarff/Getty Images) *** Local Caption *** David Cameron;Margaret Thatcher