If your trying to get insurance for the first time and you were involved in an accident with a company car under there insurance and it was not your fault do you still have to tell the insurance polic?

I had a minor at fault accident with a company vehicle. I provided my current car ins co with a letter from my old car ins co stating that they did not pay a claim on this accident. My new ins company accepted it and ignored the accident. You can do as above although it is best to tell insurance about all incidnets just in case other wise any undisclosed information could invalidate claims