<P> Silverstone currently hosts the 1000 km Silverstone of the FIA World Endurance Championship, as well as rounds of the Le Mans Series and previously the FIA GT1 World Championship . </P> <P> The British GT Championship is the major national sportscars series, with Britcar and many other smaller championships also running . </P> <P> Notable British sports car racing teams include Aston Martin Racing, Jaguar Racing, Drayson Racing, Ecurie Ecosse, Richard Lloyd Racing, RML Group, Strakka Racing, Spice Engineering and Tom Walkinshaw Racing . </P> <P> The British Formula Three Championship was regarded as one of the most important series below Formula One, with former champions including Nelson Piquet, Mika Häkkinen, Ayrton Senna and Emerson Fittipaldi . Due to the emergence of successful junior formulae in mainland Europe, the series does not attract the quality of drivers it once did, but is still the most important of the national Formula Three series . </P>

When did motor-car racing start in the uk