Mark M - emails will be seen as spam it's always best to go and see biz in person.
Darran
I'd agree with that. Go and see the businesses, sell them on you and what you can do for them, no different to knocking doors for domestic stuff. I've picked up a bathroom showroom, a restaurant, 2 furniture shops, 2 sports shops - (although lost one to a national comp.) nothing big really but it seems to work, they are cleaned fortnightly and pay better than domestic, you just have to wait for the money.