Prime Minister's Questions (often abbreviated to PMQs and officially known as Questions to the Prime Minister) is a constitutional convention in the United Kingdom, currently held as a single session every Wednesday at noon when the House of Commons is sitting, during which the Prime Minister spends around half an hour answering questions from Members of Parliament (MPs).
Although prime ministers have answered questions in parliament for centuries, until the 1880s questions to the prime minister were treated the same as questions to other Ministers of the Crown: asked without notice, on days when ministers were available in whatever order MPs rose to ask them. In 1881 fixed time-limits for questions were introduced and questions to the prime minister were moved to the last slot of the day as a courtesy to the 72-year-old prime minister at the time, William Gladstone, so he could come to the Commons later in the day. In 1953, when Winston Churchill was prime minister, it was agreed that questions would be submitted on fixed days (Tuesdays and Thursdays).
A Procedure Committee report in 1959 recommended that questions to the prime minister be taken in two fixed-period, 15-minute slots on Tuesday and Thursday afternoons. The recommendations were put into practice under Harold Macmillan during a successful experiment from 18 July 1961 to the end of the session (4 August). The very first question was delivered by Labour MP Fenner Brockway, asking to which Minister the UK Ambassador to South Africa would be responsible. In response to the Prime Minister's answer, Brockway said "May I express our appreciation of this new arrangement for answering Questions and the hope that it will be convenient for the Prime Minister as well as useful to the House?" PMQs were made permanent in the following parliamentary session, with the first of these on 24 October 1961.