It’s apples and oranges. As a regulator, the FCA has a lot more teeth than the Information Commissioner. The FCA also has a much more persuasive enforcement mechanism: frozen bank accounts. It’s a lot easier for facebook to keep servers outside of the UK than it is for BML to keep money out of the UK. Any prohibited transaction with a UK citizen is now a risk not just for the potential regulatory headache it might provoke but for the chain of accounts it risks flagging to authorities.