I understand all that, Ray...my comments were in regard to:
1. The non useful portability of wasp spray as opposed to the very concealable and stealthy 'spitfire'_
2. The IMO 'repressive' English laws denying the people 'legal' effective carry of personal defense weapons.
All that does nothing to reduce the crime rate, and places the average subject in the position to either carry ineffective items of self protection, or to punish the citizen if he were to carry and use more useful items.
In the US, all states now allow a citizen to carry concealed pistols legally, which translate in a safer populace, even for the 'non carrier'_
This is my favorite, which I can fire from inside a jacket pocket at close range...nothing better...

A punk will never see it coming.
Don is indeed a great resource and, as you might recall, was a poster on my forum years back.