LONDON: The British parliamentary sleaze watchdog will probe hard-right politician Nigel Farage's non- disclosure of a £5 million gift from a billionaire donor to his party, UK media reported Wednesday.

Reform UK leader insists the sum did not have to be declared but there are also other aspects of his finances to be addressed

Opponents say funding from billionaire demonstrates gulf between Farage's image as man of the people and his dependence on wealthy donors.