A friend of mine told me about this site and I have reqistered with them.
You can set up your services nd also the area that you want leads from and you will only be sent those that match.
Any leads that you get sent you can either discard if not interested or you can purchase that lead with tokens (average lead is costing around £15).
This will give you contact details of the prospect.
I have found it quite useful and have responded to 2 leads one of which I have as a client now. I feel it is better than paying for advertisements as the leads are targeted.