Born and raised in the USA, but for years we've talked about a frugal ER outside the USA. Britain was already on the list, though we haven't done a deep dive yet. Citizenship would obviously make transition easier. The citizenship application isn't particularly expensive.
Yes, I already drink tea, like good transit, enjoy biking, watch some BBC and am fairly familiar with the recent Brexit drama. Worked closely with a British friend for many years. We plan on an extended visit before making any long-term arrangements.
I have a (virtual) appointment next month with a specialist lawyer to advise on the process, so what I would like to know from folks in the UK: What are the top things you think I should know before planning ER in the UK? Links to reputable sites/articles are appreciated as well!