The 2018 British motorcycle Grand Prix was the scheduled twelfth round of the 2018 MotoGP season. Planned to be held at the Silverstone Circuit in Silverstone on 26 August 2018, the race was cancelled due to heavy rain. This is the first cancelled MotoGP race since the cancellation of the MotoGP class race during the 2011 Malaysian Grand Prix due to Marco Simoncelli's fatal accident, and also marks for the first time since the that racing for all classes was cancelled.