Nigel Farage has claimed that the result of an inquiry into his undeclared £5m donation from a crypto billionaire is rigged against him, in an extraordinary attack on those who will decide his fate.

The leader of Reform UK has just returned to parliament after winning a by-election he called in his Clacton constituency in protest at the Commons’ standards inquiry against him over the donation from Christopher Harborne.

The donation was received before Mr Farage became an MP in July 2024 but was less than a year before the election so fell into the period when…