AFAIK ... if u're not guilty, so u will get all the copies of accident report from the police. If u're guilty, u only get u own report.

The 3rd party insurance claim company will give u the copies of the report too & they also will submit to ur insurance company to claim the repair cost of ur car & in the same time, submit the document to ur insurance company to claim the other car insurance.

but sometimes ur insurace company will miss placed the document, so end up they will deduct ur NCD. But , if u have all the accident report document,, then u can submit to ur insurance company & get back ur NCD.