As part of a plan to be announced next month some of Liverpool's toughest schools may have metal detectors installed in an effort to reduce knife crime.

http://news.bbc.co.uk/1/hi/education/7198633.stm

They should be installed in most if not all schools as there is that element in them.

Give it 10 years and we shall have US style shootings within our big super schools that are being built.

Here's Sky News' report (http://news.sky.com/skynews/article/0,,30100-1301468,00.html):

Ministers were said to be particularly keen to encourage them in the worst affected cities - London, Liverpool, Manchester and Birmingham.