+1 to the volunteering – if you do find a club and settle in well do think about contributing in some way. At my club (Woking, deliberately not a fast / race club, we reformed in 2012 after Brad and the Olympics as a first club for newcomers to take up road cycling) we have about 300 members. 50 or so per week on the various club runs in 6-8 groups to not clog the roads up, and it’s the same few that always seem to lead the rides. And as these are generally more experienced cyclists, we’ve all gradually got a bit fitter and faster, yet ethos is that we always have a social ride at around 20-21kph and 40 miles. To have a leader for this means that leaders capable of riding faster / further sometimes have to drop down for it, some don’t mind but when it’s my only big ride of the week I don’t want to do it every 3 weeks.
So that’s my request, if you do lead rides for your clubs, consider offering to lead a slower / slow group occasionally and give the person who usually does that a week off riding further and faster hiding in the wheels.
As for clubs, no personal experience other than a dislike of Dynamo following an incident at RL a couple of years ago. I’m sure they’re a good club but when riding as a group in club kit and you behave like knobs, then the club will be tarred by your brush.