§ Mr. Hendry
To ask the Secretary of State for the Home Department what guidance he issues on the definition of reasonable force in the powers available to people in removing trespassers from their property. 
§ Ms Blears
The Home Office has recently updated "Be Safe, Be Secure", a practical guide to crime prevention. This covers all aspects of personal safety at home, including how to deal with intruders and what to do on interrupting burglars. One page covers the law on self-defence, which makes clear the principles underlying what you can properly do in self-defence or to protect another person or your property.