Nigel Farage’s attempt to draw the sting from inquiries into his financial affairs appeared to have backfired on Friday as the standards watchdog reopened its investigation and MPs from all sides condemned the needless byelection.

The Reform UK leader declared victory in the Clacton vote as he was returned with an increased majority and gained more votes than in 2024, saying he had “stuck two fingers up at the entire political establishment”.

However, parliament’s standards commissioner immediately reopened an investigation into whether he should have declared a series of gifts provided to him shortly before the last general election.

These include a £5m personal gift from crypto billionaire Christopher Harborne, first revealed by the Guardian, and further financial support from his friend and convicted fraudster George Cottrell.