Grendel, for years i was simply a member of my local club, i'd turn up in the week, and do loads of races for them.
Then i started training differently, more precisely, so moved away from regular club attendance. As this conincided with frustration that we came so low in the local XC league, i joined a club 40miles away as 1st claim, simply for XC purposes.
I'm 2nd claim for the local lot now, and still run in their colours for local stuff.
get a bit of good natured banter from them about "splitting" for the new lot for the XC league both take part in, but it works well.
Eventually i'm sure i'd need the week to week mixing with people again, but for now this arrangement works...
£12.50 for that UK club is super cheap. But if i were you i'd sign on for the club you were part of for years, it's nice to feel part of something....and you might well come across some of them at future events