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
Spouse of the Prime Minister of Canada does not officially play as active a role in Canadian affairs as the royal and viceregal consorts. The prime minister's spouse, however, is still generally regarded as a public figure, frequently accompanying the prime minister on campaign and other public appearances, and often hosting dignitaries at the prime minister's residence. At times, prime ministers' spouses have used their public status to promote charitable causes; Mila Mulroney was a spokesperson for the Canadian Cystic Fibrosis Foundation and other children's charities; Aline Chrétien was an active campaigner for literacy programs; and Laureen Harper was known for her support of animal welfare organizations