The British Formula Three Championship was an international motor racing series that took place primarily in the United Kingdom with a small number of events in mainland Europe.

Notable former champions included Jackie Stewart, Emerson Fittipaldi, Nelson Piquet, Ayrton Senna, Mika Häkkinen, Rubens Barrichello, Takuma Sato, Daniel Ricciardo and Hélio Castroneves.

By 1954, it had evolved into a national-level series and was organised by the British Racing and Sports Car Club (BRSCC).

[3] However, rising costs in the late 2000s as a result of the arrival of big-spending engine manufacturers such as Mercedes-Benz and Volkswagen and hosting rounds abroad, combined with the revival of an FIA-backed European Formula 3 Championship in 2012, starved the British series of grid numbers, which were down to the mid-teens by 2012.

[citation needed] Two engine manufacturers – AMG-Mercedes (tuned by H.W.A) and Volkswagen – were represented on a full-time basis at the time of the series' demise.