My mistake I read that number wrong. The most recent number I can find is that during the 2022-2023 budget year, the UK spent around 25 billion pounds which puts them closer to the US when compared in USD but still under. Which begs the question, what do you consider well-funded?

So per capita the UK spends more than 4x as much?

No. The number I quoted is how much the US spends federally on funding the DOJ. It does not include state and local budgets.

Its about 190B which is about on par so I was wrong. From my experience with friends who are LEO they get about 1 week of training a year which isn't enough.