Mr Farage has said that he did not have to disclose the seven-figure sum from Thailand-based crypto tycoon Christopher Harborne because it was personal and did not relate to political activity.

Nigel Farage is facing mounting scrutiny over undeclared financial gifts including a 5 million pound donation from a Thailand-based cryptocurrency billionaire

Exclusive: Latest Guardian revelation about gift from cryptocurrency tycoon comes as Reform UK leader forces byelection