I've been offered an Instructor position at the UK Infantry Battle School in Wales. Does anyone have any insight on this?

If you don't take that, just start doing push ups right now.
Of course you want this assignment, and don't delay if you haven't already accepted.

It is highly sought. Recommend you jump in it. I was in the running to be an exchange officer and I got rooked at the last minute. Was pretty pissed as I'd been brushing up on my English all that week. They'll put you up on post. You get TRICARE through the NIH in the U.K. All the exchange guys usually meet twice a year for a PT test. There is access to US support, but it is from the two AFBs there. Don't know proximity to you what that looks like.

I think this post is low key bragging....But I'm not mad at you. Congratulations.