Self-defense Still Not Legal in the UK

So what should she have done? Myleene Klass warned by police after scaring off intruders with knife - Telegraph

Miss Klass, 31, who was alone in her house in Potters Bar, Herts, with her two-year-old daughter, Ava, called the police. When they arrived at her house they informed her that she should not have used a knife to scare off the youths because carrying an "offensive weapon" – even in her own home – was illegal.

I mean if people start acting on their own behalf, before long they may actually be thinking for themselves. [Hat tip to Janette S. - Thanks for the email.]