I was listening to the wireless, I thing towards the end of last week, the mother of a young teenage who was stabbed in school was interviewed about a charity that she started to fund bleed kits and training in secondary schools.
From what I remember hearing, the training is every bit as important as the availability of the kit.
The other point here being that "run of the mill" knife crime is far, far more likely to cause a bleed injury than a marauding terrorist knife or firearms attack as the latter is exceedingly rare whereas the former is pretty common.
[As an aside. The advice for the latter is "run -> hide -> tell" I.e. run away if you can, hide if not, and phone 999 (on railway an alternative if you cannot make sound when hiding is text BTP on 61016)].
I also am told that different emergency medical responders have different preferences in kits e.g. in response to Martins Law but i have no direct experience there.
I wonder. Are we overthinking this? Someone willing to render basic first aid and call for help is so critical in an era when too many folks stop to film and do that rather than doing the first aid basics......
GC