Records of members of parliament of the United Kingdom

This article about records of members of parliament of the United Kingdom includes a variety of lists of MP by age, period and other circumstances of service, familiar sets, ethnic or religious minorities, physical attributes, and circumstances of their deaths.

The Parliamentary Elections Act 1695 established 21 as the minimum age, but until the Reform Act 1832 underage MPs were seldom unseated. For example, Charles James Fox became an MP aged 19 in 1768, and Robert Jocelyn, Viscount Jocelyn became an MP aged 18 in 1806.

Before the general election of 2015, the youngest MP since the Reform Act of 1832 was James Dickson who was elected as a Liberal at a by-election for the Borough of Dungannon on 25 June 1880. He was born on 19 April 1859 and so was aged 21 years 67 days. The youngest female MP was Bernadette Devlin, elected on 17 April 1969 from Mid Ulster aged 21 years 359 days. Both records are now jointly held by Mhairi Black, who was aged 20 years and 237 days old at the time of her election to the seat of Paisley and Renfrewshire South in the 2015 general election. She becomes the Baby of the House, the youngest sitting MP, replacing Pamela Nash, who was 25 years and 11 months old when she was elected to Parliament in the May 2010 general election.

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