Financial Conduct Authority from Britain has warned that the broker Teramusu is operating illegally in the country.
Teramusu is offering cryptocurrencies trading. Cryptocurrencies are not regulated, but Teramusu is offering trading in pairs with fiat money, so it is obviously done with Contracts for Difference, which are regulated.
But Teramusu has no investment licence. Since it is offering its services in Britain despite this lack of licence, FCA has put it on a black list.