I agree with the comment saying that for the type of work you do, it's all about word of mouth & referrals. From what you're saying about getting leads through your professional contacts, it seems like you've already figured this out.
You should probably be quite open about giving anybody who brings you a paying client a hefty commission of 10% or more.
The only problem is that getting the word out there can be pretty hard work which involves periodically calling up everybody you know and reminding them of the fact that you're looking for projects.
To plug a venture I'm involved with: I believe a lot of these referrals and recommendations can be made much easier using online tools & that's what we've been trying do at http://www.venzen.co.uk - the visitors of the site are mostly London based SME owners looking for service providers such as yourself.
You should probably be quite open about giving anybody who brings you a paying client a hefty commission of 10% or more.
The only problem is that getting the word out there can be pretty hard work which involves periodically calling up everybody you know and reminding them of the fact that you're looking for projects.
To plug a venture I'm involved with: I believe a lot of these referrals and recommendations can be made much easier using online tools & that's what we've been trying do at http://www.venzen.co.uk - the visitors of the site are mostly London based SME owners looking for service providers such as yourself.