I think in this day and age,a 999 call would be the absolute norm as most areas now have seen a great rise in crime over the last 30 years where police work flat-out as opposed to in the past where an ordinary station number would have summoned them as quickly as an urgent one.
The 3 in the morning then,was a lot,lot different to a 3 in the morning now--------times have changed,vastly. You actually had the bobby on a bike and on foot over 30 years ago.