Contractor Among Contractors
I got my first "direct" contract from an ex client talking to me about a short term need he had, when I was working for a new client.
I've since done it 3 times, and its mixed bag - the last time I did it I actually missed having a man in the middle as the client got "aquired" and didn't pay my invoice for over 4 months.
I think I spent my extra profit just chasing the swines - and reading about the Late Payment of Commercial Debts (Interest) Act 1998 etc etc.
I agree with above too, the last thing I'd do is risk annoying any of the people that feed me; but just try build a network.