Axa will cover you comprehensively to drive other cars once you have been with them for 3 years and have no convictions. There may be an age limit aswell. However, their doc policy does not cover you to drive your partner/spouse's car - you can drive anyone else's once you have their permission, but not your partner/spouse. Doesn't make sense to me, that's why I wanted to enquire if any other company would cover you comprehensively to drive other cars in the hope that they would not have this clause. Apparently Axa are the only company that (with conditions) will cover you comprehensively.
thanks for all answers.