Prime Minister of the United Kingdom sometimes used by foreign dignitaries and news sources. 10 Downing Street, in London, has been the official place of residence of the Prime Minister since 1732; they are entitled to use its staff and facilities, including extensive offices. Chequers, a country house in Buckinghamshire, gifted to the government in 1917, may be used as a country retreat for the Prime Minister. There are four living former British Prime Ministers: Upon retirement, it is customary for the Sovereign to grant a Prime Minister some honour or dignity. The honour bestowed is commonly, but not invariably, membership of the United Kingdom's most
Prime Minister of Canada revealing any secrets, I can tell you that I have done all three." Two official residences are provided to the prime minister—24 Sussex Drive in Ottawa and Harrington Lake, a country retreat in Gatineau Park—as well an office in the Office of the Prime Minister and Privy Council (formerly known as Langevin Block), across from Parliament Hill. For transportation, the prime minister is granted an armoured car and shared use of two official aircraft—a CC-150 Polaris for international flights and a Challenger 601 for domestic trips. The Royal Canadian Mounted Police also furnish constant personal security for the prime minister