G20 country prison systems that I'm aware of have early release programs, it's almost a requirement to optimise what space there is for those that most deserve prison.
What's at issue with [1] is where, in actual fact, do a couple of teenagers who nicked a quad bike and likely very unintentionally also'd a manslaughter fall on the "violent criminal" spectrum.
You mean those that are the biggest danger to the government as opposed to the biggest danger to regular citizens.
Why is this statistic relevant?
>76,869 British nationals were recorded in the prison population at the end of the first quarter of 2024. The remainder of the population was made up of 10,422 foreign nationals, making up 11.9% of the total population, with an additional 578 having no nationality recorded.
It seems the 37% figure may have come from an entry in the table breaking down those non-British nationalities by country:
>All other nationalities 3,899 37.4%
https://en.wikipedia.org/wiki/United_Kingdom_prison_populati...
At one extreme, if the population of London happened to be almost entirely foreign born then it would seem that UK citizens are working overtime at London crime.