The UK Labour Party has called on the Gambling Commission to investigate alleged unlicensed activity linked to Reform UK donors.

Tether.bet, a Montenegro-based gambling firm which is owned by cryptocurrency tycoon Christopher Harborne, has been operating without a Gambling Commission licence, according to the Sunday Times.

Harborne has been at the centre of controversy surrounding Farage, after his £5 million donation to the Reform UK leader led to an investigation by the Parliamentary Commissioner for Standards.

George Cottrell, a long-term ally of Farage, is also linked to Tether.bet, which issued a closure notice on its website on August 12. The platform asked customers to deposit bets and receive winnings via Fispay, a UK-registered financial intermediary company owned by Reform’s data protection officer Mowbray Jackson, the Sunday Times reported.

Fispay was also operating without a Gambling Commission licence, according to the newspaper.

It is an offence to provide gambling facilities without a licence in the UK under the Gambling Act 2005.

Labour said the reports raise further questions about those surrounding Farage and the financial interests of Reform’s donors. Commissioner Daniel Greenberg is investigating whether Farage should have declared a £5 million donation from Harborne, which he received before taking his seat in the House of Commons following the 2024 general election.

New MPs are required to register any gifts worth more than £300 they received in the previous 12 months, except where the gift “could not be reasonably thought by others” to relate to their political activities.