LONDON (Reuters) – Britain’s financial watchdog said on Wednesday it has extended temporary licences for only a “small number” of cryptocurrency firms ahead of an April 1 cut-off date to prove sufficient money laundering controls. Crypto firms must have a licence showing they have sufficient checks and controls to stop money laundering or terrorist financing. “We have concluded our assessments, and the temporary registration regime will close on 1 April, for all but for a small number of firms where it is strictly necessary to continue to have temporary registration,” the Financial Conduct Aut…