Lots more questions 
Greatnan all I've come across locally is the aforementioned Red Hat Club (with waiting list), and one church group.
Like Anagram I wonder if the subsidised groups are aimed at the older members of the community. The business I'm looking at is aimed as much at women who work from home, or single mums, as at the retired.
They currently have 13 groups, mainly in Kent, with around 1,800 members. Most events seem to attract around 15 to 30 members.
Gagagran No worries on either count: Apart from this past year, I have been self-employed for the last 15 years. I've also always had Public Liability Insurance in place, so there's nothing I'm not familiar with.
Gracesgran all those matters are indeed taken care of
I've been involved with a number of franchises, so I'm familiar with what to look for. I'm used to working with large numbers of children and teenagers, putting on shows, running a choir, organising events - including overseeing up to 100 excited kids, so I think I have a fair bit of patience, stamina, and organisational skills. This would be a piece of cake
. As to events and the choice thereof, members would chose what events suited them. There's no obligation to attend everything, so problems shouldn't arise. Demographically, it's fairly affluent down here, so I'm sure there would be sufficient interest.
Gracesmum and Nuttynorah - indeed, it is a risk, as is any new venture. I'm currently scratching a living, and working for peanuts, because my last venture (trying to set up my own business overseas) didn't work out.
I am though, someone who would much rather give something a go, even if it fails, than look back and think "what if"? I've spent my life taking on new challenges, and once I've mastered them, looking around for something new! Routine and safe are not words in my vocabulary 
As you say, if I have it to spare, £250 isn't a huge amount to risk. I only have it available because I have just moved and downsized, for the zillionth time, and have managed to free up a little bit of a financial cushion. I wouldn't risk the whole amount, but I feel comfortable investing this sum.
Since coming back to the UK literally penniless about 18 months ago, I have survived pretty well hand to mouth, initially with short-term contracts (Christmas working for M&S, followed by work on the National Census as a census collector, for example) and for the past year, a part-time retail job. This has suited me for the time being, as I needed to recharge my emotional batteries after an incredibly stressful couple of years, and didn't want anything remotely challenging! (Had enough of that to be getting on with in other areas of my life). However, as things are, I will continue to just about scrape by, with no prospect of retiring as I have no pension and no savings!! Not a bright prospect.
If investing £250, and time and energy, can generate a steady additional income, then it's worth giving it a go. If it doesn't work out, then it won't make that much difference in the long run, but at least I'll have tried 
I think that has answered my question really!
To your other question Nuttynorah I think that if an event wasn't going to at the very least break even, then it would be cancelled, so the organiser would not end up out of pocket.
Thanks everyone for your thoughts
