The Human Rights Act 1998 and R.I.P.A. came into force in October 2000, significantly altering the way in whch police investigations are carried out. Any person working within the fields of criminal law, law enforcement or part of regulatory body must be informed of these expansive new regulations. This text aims to provide an authorative guide to both of these major acts. It offers a comprehensive analysis of Convention case law, covering all aspects of police powers and criminal law from the first stages of a criminal investigation to trial and appeal in the criminal courts. It also indicates how and when human rights issues will arise in criminal cases.