The British Superkart Championships are a clustered Motor Racing series run in the United Kingdom under the auspices of the British Superkart Association under MSA regulations. The karts race on full-size British circuits such as Silverstone, Donington, Brands Hatch, Pembrey, Anglesey Circuit, Bishopscourt (Northern Ireland), Castle Combe, Darley Moor, Snetterton, Croft, Cadwell Park, Thruxton, and Oulton Park along with the running of the MSA British Superkart Grand Prix at Donington Park Which includes the British round of the European Superkart Championship.
The British Superkart Championship runs two packages for four classes.
In 2009, the Formula 450 National was first run within British Superkart events, running on 250 chassis featuring 450cc single-cylinder four-stroke engines, primarily the KTM engine. The Division 1, MSA 250 National and 450 classes are grouped together in one package. On a number of occasions during a season, the two groups are run together in one meeting, most notably the MSA British Superkart Grand Prix and the UK Cup event, but they run separate calendars for the majority of the season.
In recent years, drivers such as Gavin Bennett, Paul Platt, Toby Davis (VW Racing Cup) Nathan Freke (Ginetta works driver), Lewis Williamson (Formula Renault), James Tucker and Jake Green (Formula Ford) have all raced and won championships in Superkarts. Nigel Mansell raced on the Long Circuits before going on to win the 1992 Formula One Season.