History of 10 Downing Street - 10 Downing Street, the locale of British prime ministers since 1735, vies with ... of the most important and valuable in London – and the natural home of power.George Downing gave his name to the most famous street in the world. It is unfortunate that he was such an unpleasant man. Able as a diplomat and a government administrator, he was miserly and at times brutal.However, George Downing was responsible for the street, its name and the building we know today. A former diplomat at The Hague serving the Commonwealth, he changed allegiance with finesse. He traded enough secrets to gain a royal pardon in March 1660 and, by the Restoration in May 1660, to be rewarded with a knighthood.