GVT - perhaps a bit of reading is in order?
https://en.wikipedia.org/wiki/Police...United_Kingdom
My understanding and experience (nothing serious, just having spent some time in GB on business and for leisure) is that the majority of police officers are still unarmed in GB - those that have weapons are selected and trained additionally.
I haven't studied or thought about it enough to have a well formed opinion on it - but it is definitely different than the norm here in the states.
Frankly, I find your statement about informed souls a bit laughable. I'd think it a good thing if any and all informed souls working public security here in the US carried atleast an SMG, no matter big city or small town, if they were trained to the level of competency of the armed officers in GB at a minimum.