List of electoral firsts in the United Kingdom

This article lists notable achievements of women, ethnic minorities, people with disabilities, and LGBT people in British politics.
Women.
Women over 30 granted the right to vote: 1918
Women granted the right to vote on the same terms as men: 1928
First female MPs:
First female cabinet minister
First female Catholic MPs
First female member of the House of Lords
First female Commons Government Whip
First female Lords Government Whip
First female prime minister
First female leader of the House of Lords
First female speaker in the House of Commons
First female leader of the House of Commons
First female Justice secretary and Lord High Chancellor
First female Law Lord
First female speaker in the House of Lords
First female Lord Spiritual
Blind people.
First blind MP
First blind member of the House of Lords
First blind Cabinet member
First blind MSP
First female blind MP (and first black blind MP)
Wheelchair users.
First MP in a wheelchair
First female MP in a wheelchair
Black Britons.
First black MPs:
First black woman MP
First black cabinet member
First black female Cabinet member
First elected black female minister
First elected black Secretary of State
First black AM
British Chinese.
First Member of the Legislative Assembly of Northern Ireland of Chinese origin
First British MP of Chinese origin
First female British MP of Chinese origin
Czech Britons.
First Czech-born MP
Polish Britons.
First MP of Polish Jewish descent.
First Polish-born MP
South Asians.
First South Asian MP (and first Zoroastrian MP)
First South Asian Cabinet member
Javid who was of Pakistani descent, was succeeded by Rishi Sunak, who is of Indian descent. This is the first time that an ethnic minority in one of the Great Offices of State has been succeeded by another person from that category.
First South Asian Member of the Welsh Assembly
First South Asian Member of the Scottish Parliament
First female South Asian MP
Jews.
First Jewish MP
First female Jewish MP
First Jewish speaker in the House of Commons
Muslims.
First Muslim MP
First female Muslim MPs
First hijab-wearing Muslim MP
Hindus.
First Hindu MP
Sikhs.
First Sikh MP
First female Sikh MP
First turban-wearing Sikh MP
Buddhists.
First Buddhist MP
LGBT people.
First openly lesbian MP: Maureen Colquhoun, Labour MP for Northampton North, 1974-79 (outed before coming out)
First openly gay MP (and first openly gay Cabinet minister): Chris Smith, Labour MP for Islington South and Finsbury, from 1983 to 2005 and National Heritage/Culture secretary, 1997-2001
First openly gay Member of the House of Lords: Waheed Alli, Baron Alli, Labour Member of the House of Lords, 1998–present (came out in 1999)
First openly bisexual MP: Simon Hughes, Liberal Democrat MP for Bermondsey and Old Southwark, from 1983 - 2015 (outed before coming out, came out in 2006)
First openly transgender MEP: Nikki Sinclaire, United Kingdom Independence Party (later Independent) MEP for the West Midlands from 2009 – 2014. Sinclaire stepped down shortly after coming out in 2013. There has not yet been an openly transgender Member of Parliament.
First openly lesbian Member of the House of Lords: Deborah Stedman-Scott, Baroness Stedman-Scott, Conservative Member of the House of Lords, 2010–present
First openly lesbian Cabinet minister: Justine Greening, Secretary of State for International Development, 2012–16 (came out in 2016)
First openly pansexual MP: Layla Moran, Liberal Democrat MP for Oxford West and Abingdon, from 2017–present (came out in 2020)