The MGP began in 1923 as the 'Manx Amateur Road Races' or MARC. The MARC continued until 1930 when renamed as the Manx Grand Prix. Problems were encountered initially over the definition of an 'Amateur' and the first rules were extensive and open to various interpretations. Nowadays, many riders who have achieved success in the MGP move on to race in the TT but regulations prevent them from re-entering 'The Manx' unless they wish to do so on Classic machinery. Chris Palmer (former British 125cc champion) and the late Richard Britton both followed this route in 2005 aboard Manx Nortons.