Someone with a life threatening respiratory condition here, I go to hospital frequently, always by ambulance and always as a priority under blue lights. I know my local paramedics really well and get a sense of the frustrations they feel for some of the jobs they get called out for.
It's a myth that you will get a telling off for dialling 999 for inappropriate reasons, unless it's for a non medical reason, if you request an ambulance for a medical matter it will come eventually. So some of the reasons an ambulance has been called in my area recently:
A painful splinter - not taken to hospital
A flare up of eczema - not taken to hospital
Constipated young adult, as in hadn't had a dump for a few days!!!
Sprained ankle
Sore arm, person thought it was broken after bumping it on a doorframe
Stubbed toe - person wanted pain relief
Forgot to get a repeat prescription
Saddle sore after a long bike ride
Stiff legs after going to the gym for the first time in years
They also get called out frequently for coughs, colds, upset stomachs, sore throats, insect bites and drunk people (which I do understand can be life threatening it they are unresponsive)
I'm really lucky, I never have to wait but I really feel for the people who do genuinely need an ambulance for seizures, strokes, nasty accidents etc and have to wait hours because paramedics are wading through minor injuries and illnesses because people don't understand what a medical emergency is and think a potential broken toe is a life threatening accident.
Do I worry that the service is under so much strain that one day an ambulance might not make it to me in time - yes, every day.
Maybe the NHS should charge people for an ambulance if their condition is non life threatening.