Are you in Kingston or just nearby? Depending where you are my cycle club, Sutton Velo, might be worth looking into. Meets near Worcester Park, first Saturday of the month is a more chilled out ride, second Saturday is a longer ride. During summer there are fortnightly Wednesday night social rides with a beer stop.
Works well for me with a young family as I don’t feel I need to commit every weekend or even all day to club riding.
If you fancy more info let me know, not sure eif the DM function here works atm