1 . The Hungerford massacre ; in August 1987 , 27-year-old Michael Ryan shot dead 16 people ( including his elderly mother ) in the Berkshire town of Hungerford before turning the gun on himself . 2 . Harold Shipman ; in January 2000 , 54-year-old Greater Manchester GP Harold Shipman is found guilty of murdering 15 patients between 1995 and 1998 ; it is later established in a government inquiry that he killed a total of more than 200 people when practicing in Manchester and North Yorkshire 3 . Stephanie Slater ; Birmingham estate agent Stephanie Slater is abducted and held hostage in January 1992 , with her abductor demanding ransom money for her release , before she is set free a week later . Michael Sams is arrested soon afterwards and 18 months later is jailed for life for the abduction and false imprisonment of Miss Slater , as well as the murder of 18-year-old Leeds prostitute Julie Dart in July 1991
Hungerford massacre
Hungerford massacre
Crimes That Shook Britain