Annalissa Firth (née Garrett, born 1966) is a British politician and former barrister who has served as the Member of Parliament (MP) for Southend West since the 2022 by-election. A member of the Conservative Party, she was also a councillor on Sevenoaks District Council between 2011 and 2022.

Annalissa Firth was born in 1966^[1][2] and grew up in Leigh-on-Sea.^[3] Her education was at a private school.^[4] Her mother was a teacher and her father was an engineer.^[3][4] She has a brother called William.^[4] Firth studied law at Durham University.^[3]

Firth had a brief career as an investment banker^[3][4] before being called to the bar in 1991 at Inner Temple. She specialised in personal injury and professional negligence law.^[5]

Firth was elected as a councillor representing Brasted, Chevening & Sundridge ward on Sevenoaks District Council in Kent in 2011 and resigned the seat in 2022.^[6] She was elected as the National Voluntary Director of the grassroots think-tank Conservative Policy Forum in April 2020 and has also been a board member of the Conservative Environment Network.^[7][8] Firth co-founded the online summer school Invicta Academy in 2020 in response to the COVID-19 pandemic.^[9] She supports the expansion of grammar schools in the UK.^[4]

At the 2015 general election, Firth stood unsuccessfully for Erith and Thamesmead, finishing second with 27.4% of the vote behind the incumbent Labour Party MP Teresa Pearce.^[10][11]

Firth also stood unsuccessfully at the 2019 general election for Canterbury, finishing second with 45.2% of the vote behind the incumbent Labour MP Rosie Duffield.^[12]

Firth was the sixth candidate placed on the Conservative party list in South East England for the 2019 European Parliament elections, but failed to be elected.^[13]

She was selected as the Conservative candidate for the 2022 Southend West by-election on 11 December 2021.^[2] The by-election was called after the murder of David Amess, the constituency's incumbent Conservative MP on 15 October 2021.^[14] At the election, Firth was elected to Parliament as MP for Southend West, winning with 86.1% of the vote and a majority of 12,280.^{[15][16][17][18]}

Firth has been a member of the Education Select Committee since March 2022.^[19] In her maiden speech on 10 May 2022, she paid tribute to her predecessor as MP, Sir David Amess and his family.^[20]

Firth visited Archie Battersbee, a 12-year-old boy from Southend at the centre of a life-support withdrawal dispute, in June 2022 and contributed to a fundraiser for him.^[21] She criticised how the case was handled stating, "The state process for dealing with the withdrawal of life support for a child where there is a dispute between the parents and the hospital is just not appropriate", and asked for a meeting with the then Secretary of State for Health and Social Care Steve Barclay in August 2022.^[22]

She voiced her support for Priti Patel in the July 2022 Conservative Party leadership election on 10 July 2022.^[23] Two days later, Patel announced she would not be a candidate in the election.^[24] Firth later backed Liz Truss in August 2022.^[25] She was then appointed Parliamentary Private Secretary (PPS) to the Department for International Trade in the Truss ministry.^[26] The following month, after the resignation of Truss and the succession of Rishi Sunak, Firth was appointed PPS to the Attorney General for England and Wales Victoria Prentis in the Sunak ministry.^[27]

She is married to Edward Firth who is a managing director of the investment banking firm Keefe, Bruyette & Woods.^[28][29] They have three children.^[30]