It really isn't a lot of fun. When I moved out of London some years ago I was just beginning to get seriously involved in tango, but I knew there was local tango, and a train service, so I wasn't too concerned. But I was naïve. The local tango turned out to be classes only, taught by a couple with good intentions but who probably assumed that the time for close embrace social tango in rural UK still hadn't dawned. That assumption, and an unwillingness to create an opportunity for social dance, meant that tango there inadvertently remained something of an academic exercise. As for the trains, leaving a London milonga in full swing to catch the last train on a Friday night isn't a great end to an evening out.
So I started making a longer commute to Buenos Aires. Instead of at the most an hour or two of dance a week it's possible to go out daily, afternoon, evening and night. It's very easy to remember the advice from all the wonderful teachers I've met there. I can even write it down! But putting it into practice, creating new habits, changing muscle memories, takes time on the floor, there's no short cut. You can't really do this in a milonga. In the absence of a regular practice partner, private classes with women become intense practicas, with a lot of very welcome feedback, too. & sessions with teaching couples have been really inspiring.
Local tango remains uninspiring, although there's regular social dancing, organised with energy and good intentions. There's a vague feeling that tango ought to be danced close, but trying to practice the teachers' double ganchos is generally a lot more fun... As for London, as far as I can recall, the last great social teacher to visit was the late Ricardo Vidort, who died about five years ago. The unwillingness of organisers to invite good social dancers, even of a younger generation, and immigration policy*, haven't helped. London is a Mecca for extravagant choreography teachers, and tango there isn't great, although generally I think dancing close in London (if not exactly Buenos Aires-style close) is becoming more normal, more acceptable. I'm often reminded that tango outside London can be better, just, sadly, not where I live. But at least it's a good excuse to visit Buenos Aires.
(*There's a general complaint that short visits for any kind of teaching should not be treated as an immigration issue, but it takes years to change legislation, and it's such a sensitive issue.)