Susannah Streeter, senior investment and markets analyst at Hargreaves Lansdown, said: “Companies which offer crypto-assets with lofty promises to investors are coming under intense scrutiny, with regulators becoming increasingly concerned about the risks that these types of investment can pose to consumers. “The US Federal Reserve has indicated that it thinks tougher regulation may be needed. In the UK the Financial Conduct Authority has told investors they could lose all their money if they indulge in cryptocurrency speculation. The ASA is another regulator with crypto in its sights, ready to censure more firms if they don’t stick to strict codes of conduct.’’