Several insurers offer a protected no claims discount as an optional extra, eg,
Protected No Claims Bonus is an optional extra that you can take out with your car insurance cover that allows you to make a specific number of claims per year without your No Claims Bonus being affected.
For example, if you have Protected No Claims Bonus with Allianz, you can have one unlimited third party or accidental damage claim in any three year renewal period without your NCB being affected. Additionally, claims made in the case of fire, theft or windscreen damage will also not impact your bonus.