As I see it, If you drive for a living your van is a place of work. In our case, the van is only transporting us to a place of work. So smoke.
If you employ someone, and are paying him by the hour, he is being paid to travel and the van becomes a place of work for him, so no smoking.
If you are business partners, then again the van is only transporting both of you to a place of work, so smoke.
So you get to the job, do insides and out, and the customer makes you a brew, sits you down in the kitchen, and offers you a ciggy?
The worlds gone mad mates.
I was told yesterday of a dogging site in Ellesmere forest, it has become so busy, that an enterprising guy has set up a hot dog stand. I'm not joking. I just hope that ladies of the night don't feel the need for a post coital ciggy in the back of the car.
Dai.