Guys, Im wanting to buy and sell some cars to make a few extra £££'s but I would like to get a traders policy to make life easier...

Can you advise please

I'm 26 and have a job so this would be a hobby for me.

1. What companys do you recomend
2. If i'm not in the car and i park it up to go into a motor factors or something and it go's on fire/stolen/ rolls away and smacks somebodys car is it covered
3. Does it cover somebody test driving the car im selling it to
4.Can I tax cars with it
5. Is there fully comp / tpft
6. Whats the best way to tell the insurance company i'm doing, - do they take a dim view on part timers?
7. Can I use my normal no claims to bring the policy cost down
8. Whats the best way to name my "buisness" and what are these ltd companys? - Saw this on the traders insurance websites
9. Will the policys cover me on a vechicle towing a trailer that I would be using to transport a car for "stock"

I know alot of these questions will depend on the company but I prefer to hear the thoughts of you guys than an insurance saleman... and I can find any compairison sites / insurance companys that quote online, they all seem to do a ring back service and its extremly difficult for me to speak to them during normal working hours, so thought it would be quicker here...

Thank you very much for reading that lot,