Separate NCB on both cars and accident

wladekv8

Hi, I tried to look for it on google but couldn't find.
My question is that,

I own two cars on Car A, I will have 2 years NCB, and on Car B, I will have 1 year of NCB.
Both cars have different insurance company but NCB they been earned separated.

Question is, If I will have an accident as my fault let's say on Car B, then do I need to inform my insurance company from car A that I had an accident on car B, as my fault?
If yes, do I will lose my NCB on car A or just on car B?
If no, when I will be looking for a new insurance company for car A shall I'll put in a search engine that I had an accident on car B?

I hope you will understand my question.

Thanks

Quentin

Yes any accident/claim in either car will have to be disclosed to all insurers going forward.

The NCD would only be affected on the policy covering the cost involved in the clsim