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
Deputy Prime Minister of Canada to their designated successor, without any interim prime minister. By contrast, during leadership contests for the official opposition party, the leader of the opposition has often (though not always) been occupied by an interim parliamentary leader. The opposition party's deputy leader (assuming that post is occupied) is often chosen for this role "unless" (s)he plans to run in the leadership election, in which case someone else would be chosen since it would be considered harmful to the election process if the interim leader was to be one of the candidates. Legally speaking, any "interim" Prime Minister appointed by the Governor