Congrats mate!! I sent you a PM hoping for the best, I'm so pleased for you! I don't know on the details if you can trasnfer it, I'm pretty sure you can transfer a full class 1 JAA medical to the UK, and if you talk to them and tell them you've passed they might retest you, you'll have to ask!
Can you PM me any details of where you went? sounds like a good place to go