I have indepth knowledge about this, If you have any questions please ask.
Basically if you get the car through your work they will not do a credit check, If you buy yourself there will be a credit check done. It is also illegal to apply for credit over £250 i think if you are banckrupt.....
Ideally you buy a car and charge the company 40p a mile for the first 10k miles then so much per mile after. You would have to buy the car, insure it etc as usual but i know friends who do this and they actually make out of it.
Im sure i will see you tonight and if you wantto know anything about business, bankruptcy and lease etc we can have a chat in private.