The chief UK financial regulator has warned Premier League football clubs they could face legal action over “questionable sponsorship deals” with crypto companies that are not authorised to operate in Britain. The Financial Conduct Authority has written a letter to Premier League men’s clubs stating they risk enforcement action by taking sponsorship money from crypto and trading companies that are not permitted to offer services in the UK. Crypto companies have become prolific sponsors of top-tier teams in recent years as they seek to tap into the millions of football supporters and encourage them to trade digital tokens. The FCA said it had seen “an increase in football club partnerships with unauthorised firms, some of which appear to be operating unlawfully”. In the letter, Fiona Mackinnon-Miller, head of the FCA department overseeing scams, promotions and consumer investments, warned that such deals “risk conferring legitimacy on these firms and may expose UK consumers to ...