You will need a no claims bonus. I suspect there is crossed wires here. No insurer will take you on without evidence of your driving history or no claims bonus - regardless of whether your policy is incepted online.
They will let you buy the policy and then look for your documentation within a certain time-frame e.g. copy of your drivers licence, NCB. All things they must have.
Whilst I gather your heart is in the right place, this isn't good advice to be giving if you are not 100% in your facts.