Insurance

As the title suggests, I need to insure my HT ..

I had a policy with protect my bubble already because of a loan bike scheme I took part in. Called them today to change it over to my cinder cone, ran into an issue.

I bought my locks from halfords, however not thinking that I'd need them, I threw the receipts. PMB said that it would make a claim invalid if I could not provide proof of purchase for the lock (What if you've had the same lock 10 years? Doesnt make sense to me)

So my question is, is this normal insurance policy?

Could anyone suggest another provider?

Thanks !