In reply to mypyrex: Well I use to have the BMC worldwide trek cover and then take out single trip extensions for expeditions. But it is now £284 for me & mrs for the Trek. Nationwide Travel policy you get FREE with a current account you can extend for £20 to be Worlwide and it provides virtually the same as the BMC
Worldwide including USA. Year unlimitted number of trips but max trip 31 days Nationwide only does Treks up to 5450m and no ropes. But it also has better levels of cover for quite a few items.
BMC has priced themselves out of the market for normal Yearly Travel Insurance.