Most Insurers do actually accept company no claims bonus, provided you can provide a letter from your employer and your not the MD of that company!

 You will get a discount albeit it will be a slightly lower than what ac actual NCD will get you!

No Claims Bonus has to have been earnt in your own name on your own car, so no you won't have any.

 BUT..... most insurers will take into account the amount you have been driving claim-free and give you some kind of discount ( this is not the same thing as awarding you so-and-so years NCB)

Probably, but will depend on the insurer as they all have different rules.

Get a letter from your employer, and make sure when you are shopping around that they are aware of your accident free history.