not sure about UK , at the moment I'm in Ireland , and had a laugh when saw that even cops (Garda Shiochanna) Do NOT carry firearms..
In eastern europe security is armed better then government here

I think soon i will buy myself a stab-vest as seems law here is on the bad guys side,and youngsters are such a spoiled brats here that i would send them all to army,preferably Russian....
i hate laws in eastern Europe cause of taxes,but when it comes to defending yourself and others i lowe it , i have license to carry and use firearms which are a deadly force , and i wouldn't hesitate to use them if some brat would come on me with knife...