Frank Ernest Field, Baron Field of Birkenhead, was a British politician who served as Member of Parliament (MP) for Birkenhead for 40 years, from 1979 to 2019, serving as a Labour MP until 2018 and thereafter sitting as an independent. In 2019, he formed the Birkenhead Social Justice Party and stood unsuccessfully as its sole candidate in the 2019 election. After leaving the House of Commons, he was awarded a life peerage in 2020 and sat in the House of Lords as a crossbencher.
