http://news.bbc.co.uk/1/hi/uk/8359948.stmSounds more like a problem for the police more than anyone else...
First of all, you'd need to sort out the ambiguities with community officers alone before criticizing private patrols.
Secondly, the private sector seems to be good enough as far as the government's concerned, from school's to what leads to military inquiries

, so why not 'policing', eh?
Thirdly, it's been clear for some time that the 'poor' have often gone without proper policing
Such ventures wouldn't exist if there wasn't demand...