If you want to pass on compliments you can phone the ambulance service trust concerned; directory enquiries should have the number. When I did this I was asked my name, and the location and time the ambulance was called, which allowed the right people to get the thanks they deserved. Just as well since as with many patients I was in no condition to be remembering the names of strangers, even if they were briefly my best friends! I was told they would get a written commendation from their chief exec. Don't forget the dispatchers! If your relatives were treated at an A & E department I bet the staff there would appreciate a thank-you card too.