why don't u just bring some gear from thailand into the UK then?
I'm over here now too....getting gear is quite easy, though some guys still buy from "dealers" (mostly other foreigners preying on the ignorant).
I'd make sure how easy it is if you get detected in UK customs. Getting a legit script from a Thai hospital for HRT is an option. Just get it for a long period of time, so you can make BB cycles out of the test. Thay way, if you get stopped you have a legitimate reason for the gear, but odds are they will still seize it since it's not a UK script....that's how it would be in the USA at least.