West Drayton are a big club, I've been a member for about 9 years, and I know about 10% of people now! They do a lot of their rides around Swinley Forest, but also tend to do rides from Denham Country Park near Uxbridge too.
The shop that sponsors the club is near Guildford, so there's a substantial club contingent around there, but we have got members from New Zealand and even further afield, there's one fellow from Harrogate.
There's a weekly ride and club night in Uxbridge if that's your thing, and they promote a number of events (competitive and not) each year. I'd recommend them, we're all friendly. Usually have a reasonable turn out at races too, if that's your bag.