Sort of funny the Bobbies did not carry firearms at a time any Brit could get a firearm. There is an inverse relationship between Bobbies needing firearms and the stringency of gun control in the UK.
The UK has never been a gun owning/buying public, so even when laws were easier, few British owned one. Guns aren’t just part of our culture as they are in the US. Not wrong, just different.
Those days were long gone by WWII.