There is one very important caveat about the population of the City though.

Whilst there are only 8,600 residents, there are apparently over 600,000 commuters working there every day.

https://www.cityoflondon.gov.uk/about-us/about-the-city-of-l...

Because policing is all about who's resident in the territory covered?

Good point, bad tone :)

Is that what I said? Nope

Erm, yep? You compared #officers/#residents for City & Met police; I'm saying that's irrelevant. City has much lower #residents/#crime, or / money changing hands, or / footfall on an average business day, etc.