Traders policy's are meant for car resellers, as such the insurance schedules tend to be worded towards that, as opposed to those who "work" on the vehicles....

I can drive any car in my "care custody or control", fully comp for business purposes.... only the van is listed on it and has social use also, anyone else who holds a licence can drive on it also, provided I am siting next to them ... they werent keen on the Esc being on it pmsl