Welcome to Babypips, Lewis. Switching from crypto to anything sounds like a good move to me. 
I think you might mean “broker,” when you say “platform”? (2 very different things!).
UK regulation by the FCA is the very best (for customers) and you don’t need to be either British or UK-resident for your account to be protected by both the government-backed funds-security guarantee and the financial ombudsman service, both free if you ever need them.
But any broker that’s regulated by a proper EU regulator should be OK. That’s the one thing that matters far more than everything else added together.
It’s where your account is regulated that matters, not just “where the broker’s regulated”.
Cyprus, Malta and Bulgaria regulation isn’t quite as good (for customers) as any other EU regulator, and some experienced forex traders do carefully avoid those countries’ regulators when opening a new account.
i like Oanda, but unlike all the information above, that’s personal opinion only. Everyone has one and thinks theirs is best!
Good luck!