Wow! I had a feeling that others would have had similar experiences, thanks for all your replies. The renewal was due 1/3/14. I organised the new insurance on the day I got the quote from M*A, and sent a hand written letter to cancel the first policy, not sent recorded delivery. That was the 9/2/14, so the reminder was sent to me less than a month before it was due, as has been my experience from previous years. The debt collection agency letters have a different postmark, but they struck me as not being genuine for several reasons, not least of all because of stories in the British press about so-called debt collectors for banks, being just a desk in the branch with no actual debt collecting credentials. And yes, they have ignored every letter I've sent them. It seems a contradiction that, if you are obliged to give two months notice, you only see the quote for the next year's premium one month (or less) before renewal. And the moral of the story...if you are about to insure your French property...for goodness sake don't touch French insurance companies. To be fair, though, the one story I'd heard along these lines was from someone with a property in Spain. They are obliged to give two months notice, with the same penalties for blundering into the trap. Now...when I've worked up the courage...I'l open this new letter, postmarked 'Bourges'.