Have you thought about structured networking? Someone here mentioned networking in the sense of giving talks to groups which I'd definitely agree with but do have a look at your local networking groups. I didn't know a soul when I relocated to open my business and networking was perfect (even though I thought I'd hate it - how wrong can you be....)
I don't know what you have locally but I use:
Chamber of Commerce (cheap and you get to hear all the local gossip)
Athena (women only - not cheap but more than paid for itself and is huge fun)
Ladies who Latte (women only but just pitch up and buy a coffee)
Business Biscotti (mixed and again no committment, just £2-3 for a coffee)
Refer-On (very expensive and requires committment but worth going to their open/visitor events if nothing else (I went to one and about 10 months later someone I met there had an accident, remembered me and I got about £1,600 of business from him)
BNI (similar to Refer-On, not for the weak-willed)
And there are probably lots more. I think these all have mtgs all over the country. Enjoy!