Andrew Staniforth is an experienced counter-terrorism investigator who is responsible for designing and delivering training to counter-terrorism officers at one of the four specialist Counter Terrorism Units in the UK. He has been commended for his work on counter-terrorism training by West Yorkshire Police and has also been involved in developing national exercises to examine the preparedness of both covert and overt police counter terrorism assets.The Police National Legal Database (PNLD) is a comprehensive online legal resource of up to date legislation that is used by all 43 police forces in England and Wales. PNLD is governed by the Police and Crime Commissioner for West Yorkshire Police and continues to provide complete reassurance that the law is being applied correctly.Professor Clive Walker is a specialist in terrorism, the law and police powers and is widely published on the subject. He is also Consultant Editor for Blackstone's Counter-Terrorism Handbook.