Hi..some good advice here, but don't rely on the EHIC to cover you for helicopter rescue whilstsnowboarding or anything more disasterous than a sprained ankle. Also check out if you're policy covers you for working when you are abroad. Some don't even cover volunteering. I would look on some of the other forum sites (not sure if I'm allowed to mention Lonely Planet Thorn Tree) here, but there are some good travel insurance tips there and several companies keep coming up.