The Metropolitan Police is investigating donations to Reform UK linked to a company controlled by the party's deputy leader, Richard Tice, marking a fresh legal headache for the party ahead of further scrutiny of its funding. Tice's fundraising vehicle, Britain Means Business, reportedly passed on money originally donated by Fiona Cottrell, a significant Reform donor with no prior history of political giving, whose son is a convicted fraudster with links to Nigel Farage.

Detectives from the Met's Special Enquiry Team are examining alleged offences under Section 61 of the Political Parties, Elections and Referendums Act 2000, following a referral from the Electoral Commission in February 2025; two people have been interviewed under caution, though no arrests have been made. Ms Cottrell is said to have given £1 million to Britain Means Business in June 2024, half of which went to Reform, while four payments totalling £1 million were made to the party directly between May and June 2024, shortly before Tice and Farage were elected to Parliament; the Times reported Reform's bank account was frozen during this period. Tice has defended the donations as legitimate, accusing the Met of a "politically motivated smear campaign", while Labour has seized on the case alongside other funding controversies involving Farage and Tice.