The 1959 British Grand Prix was a Formula One motor race held at the Aintree Circuit on 18 July 1959. It was race 5 of 9 in the 1959 World Championship of Drivers and race 4 of 8 in the 1959 International Cup for Formula One Manufacturers. It was the 14th British Grand Prix and the third to be held at the Aintree Motor Racing Circuit, a circuit mapped out in the grounds of the Aintree Racecourse horse racing venue. The race was held over 75 laps of the four kilometre circuit for a race distance of 362 kilometres.

The BRM P25 was a Formula One racing car raced from 1956 to 1960 and the second car produced by the British Racing Motors consortium. After the failure of the complex BRM V16, the P25's design emphasized simplicity. The car was fitted with a 2.5-litre straight-4 engine, producing some 275 horsepower. The P25 would be the foundation of BRM's successes in the late 1950s and early 1960s.