It's a shame to hear that Flysure has started doing things like this.
I used Flysure annual travel insurance for more than 26 years and always found them to be fair, helpful, good value and reasonable when it came to paying claims.
I only stopped renewing with them this year when I discovered that I am covered (along with my sons) by travel insurance through my Lloyds bank account. I have a Lloyds TSB Premier account and it also includes top level AA cover and mobile phone insurance along with a few other things which I don't really use.
I checked with them what the level of cover for the travel insurance is and it seems to be just as good as Flysure. Thankfully I haven't had to make a claim so I can't tell you how good they are at that.