In reply to SomeClimbingGuy:
We were just in Spain and a friend of ours took a ground fall from 20 meters, 'luckily' he only fractured his heels and punctured a lung. We went with club direct insurance who were a bit of a mixed bag, they were poor at organising accommodation while waiting to be flown back to the UK, but they did pay out an enormous sum to fly my friend back in a private plane with a doctor. So they were OK, but perhaps a little unwilling to pay out, though I'm not entirely sure what company wouldn't be.
For the guy asking why you'd want more than an EHIC: That depends on whether you're happy to stay in a hospital for a month or more until you're cleared to fly on a commercial flight, or whether you'd prefer to be repatriated quickly and stay somewhere other than a hospital while you wait for that flight.