The Heritage Party is a Eurosceptic, right-wing populist, and socially conservative fringe political party in the United Kingdom, founded in October 2020 when then-London Assembly Member David Kurten left the UK Independence Party (UKIP) to form the party. Kurten was also a member of the Brexit Alliance, a Eurosceptic technical group he formed in 2018 with fellow former UKIP member Peter Whittle.

A by-election for the House of Commons constituency of Hartlepool in the former county of Cleveland, England, was held on 6 May 2021. The by-election was triggered following the resignation of Labour Member of Parliament (MP) Mike Hill, who resigned over allegations of sexual harassment. It was held on 6 May 2021 alongside elections to the Borough Council, Tees Valley Mayor, and Cleveland Police and Crime Commissioner.