It's a tough one, the role would definitely come up again but right now it puts me a little ahead of realistic career progression which is nice. It also, strangely, makes my long term living in America easier to achieve due to job status requirements. Been thinking about it a lot today and I'm definitely leaning towards a move back to London, I'm already looking at houses and cars which says something I think.
You'll have to go through a grueling series of interviews and challenges if you want a job though!