Nigel Farage, the leader of Britain’s anti-immigration Reform UK party, has been referred to the UK parliament’s standards watchdog following reports he failed to declare assistance from a wealthy backer previously imprisoned in the US for wire fraud.

The Sunday Times reported yesterday that, in the lead-up to the 2024 general election, Mr Farage was provided with security services, social media support and accommodation by George Cottrell, a 32-year-old cryptocurrency investor who served eight months in prison after being caught agreeing to launder money for drug traffickers in an FBI sting operation.

Known by the nickname “Posh George”, Mr Cottrell later served as chief of staff to Mr Farage during his time as the leader of UKIP, and…