At the time of giving evidence, Sir Hugh was President of the Association of Chief Police Officers, representing the 44 police forces of England, Wales and Northern Ireland. He retired from the role in 2015. Previously, he had served with Metropolitan Police Service, including taking part in the inquiry into the murder of Stephen Lawrence. From 2002 to 2009, Sir Hugh was Chief Constable of the Police Service in Northern Ireland. His testimony included the reflection that he had found the Press Complaints Commission "powerless" in its handling of intrusions into his own private life by the press.
Private investigator and Director of Operations at Insight Investigations, overseeing the day to day work of more than 20 investigators operating throughout the UK, Europe and around the world for Insight clients. Also gave evidence on the workings of the World Association of Private Investigators.
Information Commissioner of the United Kingdom from 2002 to 2009. Gave evidence on the responsibilities and workings of the Office of Information Commission with particular reference to privacy. During his time in office, he had raised concerns over the increased use of closed-circuit television (CCTV) and the introduction of ID Cards in the UK.
At the time of the Inquiry, Marratt was Communications Officer of Surrey Police. As head of the "Fast-time Communications Team", he was responsible for handling urgent or imminent communications requests, both internal and external. Marratt answered questions from the Inquiry on relations with the media.
IT expert employed by the National Policing Improvement Agency (NPIA), a Non-Departmental Public Body of the Home Office created to support effective policing and improve public safety. Answered questions about the Police National Computer and the vetting procedures for access to it.