To ask why you've phoned the police?

I'm pretty old, and I've never called 999, for any service.

I called when my baby choked some food and went blue and floppy in my arms. Ambulance arrived 5 mins later. Fortunately during that time I managed to remember what I’d learnt on a first aid course and dislodged it myself so he was ok.

Another time I called as 2 men were having a fight outside my house. One of them was holding a massive knife and the other one smashed him over the head with a vodka bottle! 😱

Fighting on the street, a couple of scary times were people have had broken bottles
And then another time when I heard my neighbour screaming and fighting with her boyfriend

Drug dealing and taking in my street. Called police and they caught them red handed.
Neighbours having massive drunken argument around 1am and kids in the house and sat in front garden. Police came and calmed the situation.
I wouldn’t hesitate especially with children if I was worried. Police reports get copied to schools that children attend so I think it’s really useful thing for schools to be informed of extreme difficulties at home especially if parents (and children) are masking problems.
Awful but essential.

On the motorway we saw someone driving a car with a completely smashed in windscreen, no license plate and veering everywhere. Took over 7 minutes on hold (to 999!) to speak to an operater and by that point all I could tell them was the junction he'd got off at.

I called them when a woman was running up the street at 5am screaming for help (DV).

I called when house opposite of mine had someone in with flashlight at 1am. I heard noise, saw someone walking into garden via side gate in a dark then flashlight inside. Electricity worked because outside light was on. Turns out it was a bit odd neighbour who lived there, we were new and didn't know yet...

Once when I was living in a shared house and the lady in the room next door was having a domestic with her boyfriend.

A few years ago I saw a man shouting aggressively at a woman in the street (persistently). I called the police because I was worried for her safety. They said they’d send someone. I wish I’d been brave enough to actually intervene, but I wasn’t.

A couple of times: when a man was breaking into cars in the car park of our old flat with a small hatchet, once for a domestic disturbance when a man was aggressively shouting to be let in (middle of the night) and his female partner wasn't letting him in, more recently in our current house after seeing men trying doors of the garages at the back of our property. Only a handful of times in over 20 years...

Yes I’ve called for a brawl in the street and also when there were intruders on a neighbours drive

I’ve also called 101 for a herd of escaped cows causing an obstruction in a country lane in the dark.