[joshem]

Thanks for all your responses. Really appreciate you explaining things thoroughly, Paul Coleman. I'm gonna just use house number/postcode as this seems the most sensible.

Cheers all 

[SPE]

I am going to offer bank transfer method soon to my customers who post cheques.
I use george and have noticed each job now has a job id.
Does anyone else give this as the customers reference ? am thinking it would work successfully as I could just check my statement weekly and put the job id numbers into georges customer search and mark them  as paid.