For example, for a murder, someone may be given a life sentence with a minimum term of 15 years. This means they cannot be released on parole until the minimum term is served. Some prisoners serve considerably longer than the minimum term recommended by the trial judge - even if it was later reaffirmed or reduced by a Home Secretary or by the High Court. A notable example is Harry Roberts, jailed for life in 1966 for his role in the murder of three policemen in London. His trial judge recommended that he serve at least 30 years before being considered for parole, but he was not granted parole until 2014, by which time he had served 48 years in prison.