Hi
As Helenagrace mentions there are Action Learning Sets/networks like you are describing for the business world, but less so for the entrepreneural world. It probably comes down to money :( Plus I also wonder if there is a small issue of competition etc if you meet locally. I just know that I am a member of FSB, and there is lots of chat on their LinkedIn groups about lack of real sharing - the sorts of thing you are talking about - but I think the issue is that other members aren't prepared to demonstrate they have challenges/weaknesses in front of what could be an audience of potential clients...
On that note, you could always have 2 accounts on UKBusiness Forums, one more anon one for numpty questions and one in your business name if you are looking to promote yourself as a helpful/knowledgable person. I did, and I am glad, as I found somebody rather aggressive on their and I am glad he didn't know who I am.
I think you are looking something that is already set up, but you could always look to set one up yourself? That will take time and making connections if you don't have them, but I have met lots of people locally who are setting up their own networking events - different objective obviously - but if it doesn't exist...there is a opportunity!
Or I have used business coaches previously in my employed life. I I have paid £000 per session, but you might be able to find somebody locally that is cheaper. You might find paying for a service helps you focus?
If you are interested in Soc Ent in the future, if you don't already maybe sign up to various e-newsletters for the following Soc Ent focused orgs and follow on Twitter if you are on there:
www.socialenterprise.org.uk/
www.unltd.org.uk/
www.sse.org.uk/
www.socialenterpriselive.com/
Also I wanted to share this www.thesocialbusiness.co.uk/blog/2011/02/circle-of-critical-friends/ I follow Rob on Twitter. He is a consultant, but seems to have Soc Ent advising sewn up in Leeds! He mentioned his Circle of Friends evening, which struck a cord with what you are looking for, maybe a model for you?
Anyway, cannot offer anything on taking on staff.
Good luck.
WS