Explanations for overseas readers required straight away! The ridiculous Harriet (Hattie) Harman is the Deputy Leader of the Labour Party, having been elected as such in an appalling lapse of taste by the three remaining members of the Labour Party. She is also something or the other in the Government but I forget what.
Hattie is also the Member of Parliament for Peckham - a part of south-east London not known for its - um - peaceful nature and has incurred much derision for going walkies in her constituency wearing a stab jacket. Our heroine was in the company of a large number of burly police officers at the time, thus presumably reducing the risk of being stabbed to the minimal - even in Peckham. Quite what Hattie thought she was up to remains obscure. A Peckham resident was quoted as saying 'we only ever see her when there's an election on or she's doing a PR stunt'. One can only tut at such cynicism. Apparently Hattie has explained her fashion mistake by saying - among other things - that it was like wearing a hairnet, which put me in mind of Ena Sharples, the hairnetted harridan of the early years of Coronation Street. Feast your eyes at the Warholisation of Ena. It's better than thinking about Hattie..