I'd be a bit wary of going down that road mate, I had an arrangement with a canvasser to view some work he had canvassed in the Essex area last weekend, it was £500 pounds worth of work, he wanted 2x, said to give him a call Saturday to arrange meet, kept ringing but no one was answering, was a bit wary about buying the work though, he wanted to know if I was cheap with my pricing, so not sure if the work could have been under priced, then he wanted to meet in the local Asda car park, as if you going to do a deal like that.
I know from canvassing the area that it's pretty sown up round them parts, but he was claiming to be getting around £400 pound a night, and £2000 for 1 windy in the area, don't get me wrong, not all canvassers are bad, just be careful as the guarantee is not worth the paper it's wrote on.
Brian.