Reform UK Prepares Legal Challenge Over Donor Cap Legislation

Reform UK is preparing a legal challenge against new government legislation that aims to cap overseas political donations at £100,000. The party intends to retain £72 million in recent crypto-linked donations, asserting these funds complied with existing laws at the time they were received. Government officials seek to apply these restrictions retroactively to March 25, 2026, with the stated aim of preventing foreign influence in domestic elections.

Retrospective Application Questioned

Legal advisors for Reform UK are evaluating challenges based on the retrospective application of the proposed law. They may cite Article 7 of the European Convention on Human Rights, which former Conservative Attorney General Michael Ellis has suggested as a basis for appeal. This strategy presents a significant political risk for the government, as it could allow Reform UK to frame the regulatory action as an attempt by the political establishment to suppress an opposition movement.

The proposed legislation stems from an independent review's recommendation on March 25, 2026, to cap overseas donations due to complexities in tracing foreign fund sources. This change would subject individuals who register in the U.K. after that date to the £100,000 cap until at least 2028.

Debate Over Donor Eligibility

Reform UK

The £72 million in question comprises two £36 million donations, reportedly from Christopher Harborne and Ben Delo. Reform UK leader Nigel Farage has stated the donations were "100% compliant with the law today," although the party has not clarified when the two donors registered in the U.K.

Delo reportedly announced his move back from Hong Kong in April 2026 to continue donating, while Harborne is said to have registered on the U.K. electoral roll in June 2026.

Future of Campaign Finance Rules Internal government deliberations continue regarding stricter residency and tax-status requirements for political donors. While the administration aims to mitigate the influence of foreign capital, the move risks accusations of selective enforcement.

The outcome of this dispute will likely influence future campaign finance governance and the legal threshold for political funding transparency in the United Kingdom.