Also off-topic but perhaps useful. I had to call an ambulance a couple of days ago. Well, my other half did because I wasn't far off passing out from the pain. The RRV person and then the ambulance crew were great: I didn't have a life-threatening problem but I was terrified and their calm professionalism greatly reduced my anxiety. Now back at home, I phoned the local trust's HQ just now to find out how to say thanks to the people who looked after me (not forgetting the dispatcher). If you do this, your comments are passed on to them and they get a letter from their chief exec. So if you need an ambulance, do phone your trust afterwards and say thanks.