Parliament amended the Representation of the People Bill on 25 March 2026, banning crypto donations and capping overseas elector donations at £100,000 a year. Reform UK is the only major party confirmed to have received crypto, with 30 days after Royal Assent to return any unlawful receipts.
The retrospective element is constitutionally novel: UK electoral law has never applied a donation ban to receipts already made. The return deadline may fall during Reform's final campaign push.
