Rosemary Ann Sexton (born 16 July 1977) is a British politician, mathematician, sports therapist, osteopath, and former mixed martial artist.

[1][2][3][4][5] A member of the Green Party of England and Wales, Sexton was elected as a councillor in the Shirley West ward of the Solihull Metropolitan Borough Council in 2019.

Sexton was born in Versailles, France but moved to Britain at a young age, and grew up and received her education in the United Kingdom.

[9] Her supervisor was Harold Simmons who held a joint position in the School of Mathematics and the Department of Computer Science, with whom she wrote two papers Point-sensitive and point-free patch constructions.

[13] In May 2019, Sexton was elected as a Green Party councillor in the Shirley West ward of the Solihull Metropolitan Borough Council.

[14] She ran in Solihull as a parliamentary candidate in the 2019 general election, losing to Julian Knight and coming in fourth with 3.7% of the vote.

[15] On 28 June 2020, it was announced that Sexton would stand as a candidate in the Green Party of England and Wales leadership election.

[16] The results were announced on 9 September 2020: Sexton came second, beaten by incumbent leaders Jonathan Bartley and Siân Berry.

A clue to the reason for this career change may be found in her comment "The other things I did, the music, the maths, just weren't quite hard enough"[6] At the same time, she trained in osteopathy, receiving a degree in that subject from Oxford Brookes University in 2010.

She has written about the problem of performance-enhancing drugs (doping) in combat sports, and is a supporter of the Voluntary Anti-Doping Association, VADA.

[18] She is a spokesperson for SafeMMA,[19] an organisation dedicated to ensuring safety of competitors, and she runs a combat sports injury clinic.

Sexton debuted for BodogFight on 16 December 2006 and upset Brazilian submission specialist Carina Damm with an armbar late in the first round.

On 17 February 2007, Sexton faced Japanese striker "Windy" Tomomi Sunaba at a BodogFight event in Costa Rica.

[33] Sexton returned to face Sally Krumdiack at Cage Warriors Fighting Championship 39 on 27 November 2010 in Cork, Ireland.

[42] Sexton was scheduled to face Sheila Gaff in the finals at Cage Warriors Fighting Championship 49 on 27 October 2012 in Cardiff, Wales.