I insured a classic car with CN and opted for the agreed value fully comp cover. As per their requirements, I sent a decent amount of high quality photos to them, along with the agreed value form and some examples of adverts of similar cars to support my assertion that the car was worth what I suggested it was. I heard nothing back from them and eventually rang up to ask what was happening. They said they hadn't received anything from me. While I was on the phone, I checked my Post Office receipt which confirmed I'd sent it 1st class signed for, and that it had been signed for at their address 2 days later. I've told them if they don't remedy the situation within 14 days, I'll cancel and sue for a full refund.