We have Direct Line. We actually had to use it two years ago on the way back for our trip to NY. Rich got sick, we had to get off the plane (Yes, we were those people) 3am Rich needed to go to the ER. ER costs were paid in full, no hassles. Never got charged for switching dates for the plane either. Only thing is you must call them first and you can not see a GP, you must go to the hospital.