I could be moving to the UK, wondering how getting T/insurance works there

[ceresvulcan]

I won't know if I'm moving for a few months still, but if I do I will be moving in September and living there for 3 years at least. I'm wondering what happens to my health insurance (I'm insured through my job), can I get it over there and how would I be getting my T? I know they have a better health care system so I'm hoping it's still fairly simple to get ahold of. If anyone could point me to some helpful websites that would be great.