I've gone for Aon. Family cover for a year (got a staff discount with work) and it worked out to be £112. What was good about it was that it covers scuba diving, winter sports and even cancellation due to illness etc. Also, if you are pregnant, it will cover you to travel up to 32 weeks (I think 28 weeks is standard with most other insurers). Good luck finding one, I think I called like a billion places!