but the chances he would have been charged or even interviewed for very long, close to zero. >> the interview as it is on the recording would not be legal in the uk. and that evidence would not have been admitted at trial. >> this is andy griffiths. 26 years a detective in the sussex police department. internationally recognized for his work in investigative interview techniques. when he was a rookie, british interrogation rules were much like they are in the u.s., but they are not anymore. >> what happened to precipitate these changes in the united kingdom? >> changes really came about through problems. >> like a national scandal after a series of high-profile false confessions, including an arson/murder case eerily similar to robert davis'. >> the government of the day instigated a review of the way that prisoners were dealt with in custody. >> the result? a complete overhaul of the system. every officer in the uk retrained to rigorous standards