Nigel Farage is set to face an investigation by the parliamentary standards commissioner over a gift of £5m he received from crypto billionaire Christopher Harborne before becoming an MP, The Independent understands.

Mr Farage was referred to the watchdog after he admitted he received the money from Harborne , a British national based in Thailand who helped bankroll Brexit, back in 2024.

The Reform leader has come under fire for failing to declare the donation - given just weeks before he declared he would run in the general election - which the Tories say should have been reported to Commons authorities.

Mr Farage has said the money “was given to me so that I would be safe and secure for the rest of my life.

“I have tried and failed in the past to get security funded by the Home Office, and I don’t think the state will ever help me.

“I’m very much on my own and will be for the rest of my life, and I have to face up to that grim reality.

“Christopher is an ardent supporter who is deeply concerned for…