Just watched it. Pretty useless really! One woman got charged the excess 5 times instead of 2 (for 5 lumps) with PetPlan. Someone got a huge increase with Green Insurance, who then put it down a bit after the complaint. Someone had an eight year old dog that had an increase. Someone had a policy with M&S put up from £770 to £870 or something, and then got a new policy for £269 also with M&S (ie they're ripping off existing customers). So the advice is that if your dog has no pre-existing conditions then definitely shop around or you may get screwed!
No mention whatsoever of Axa.
Didn't have anyone from any insurance companies justifying any of it - just a couple of reported responses that medical advances meant that more people claim for more expensive treatment, and general vets fees are going up. Nothing about the sex of the pet, where you live, etc. which seems to have come out of variance response letters to Axa complaints (on the FB page discussing this).