This is a case of really bad timing!
Last year I insured Drum and Bass with More Than (not the cheapest but so few companies will insure oldies now). However, when it came to renew this year, the premium was really expensive - and I hadn't even made a claim - so I rang them to see what they could offer, which turned out to be nothing! They suggested I take out a cheaper policy (half the cover for a lot more than half the premium!), which I went for. Of course, this meant cancelling the expensive policy and in effect (even though it was the same company and the same cats) taking out a brand new one.
Then I took D&B for their boosters, and mentioned to the vet that Drum had been drinking a lot. She suggested giving her a bit longer and bringing her in for tests if she wasn't any better. Long story short, Drum had blood and urine tests a few weeks later, followed by a scan which showed kidney disease, and an AB injection, which in all came to over £300. I claimed for it but More Than refused to pay because Drum had first showed signs of the illness within two weeks of my taking out the new policy. Technically, I suppose they're right - I first mentioned it to the vet when I took them for their boosters, although it was a few weeks later before she had the tests.
More Than now say I can't claim for any treatment connected with Drum's kidney disease. Ever!
Is there any way round this? If I try a different insurer, is it true they won't cover existing conditions?