Police are 'assaulted every 20 minutes' / Telegraph, 27 April 2007
http://digbig.com/4ssqj
Graeme Wilson

Police On The Beat: A study and report into assaults on Britain’s police by Grant Shapps MP / shapps.com, 26 April 2007
PDF - http://www.shapps.com/reports/Police-on-the-Beat.pdf