My husband had a triple coronary bypass in 2007, an aortic dissection in 2008 and since then three aneurysms, the largest of which is 5.7. He is monitored at a London hospital every nine months and has been told there is no reason why he shouldn't fly and holiday abroad. We used to use Staysure but they became expensive so now use Global, a company that works in a different way from most insurance companies. There is no medical screening so you don't have to declare pre existing conditions but all conditions that have arisen in the last year are excluded and the excess is £1000. I had a telephone chat with them before booking online and the annual premium was £158 last year. We've used them for the last two years for trips to Europe although we never go anywhere remote and I always make sure I know emergency numbers and location of hospitals.