20th-century British murderers

English author (1938–2023)

British Army officer, creator of the Chindit mission in World War II (1903–1944)

Dennis Andrew Nilsen was a Scottish serial killer and necrophile who murdered at least twelve young men and boys between 1978 and 1983. Convicted at the Old Bailey of six counts of murder and two of attempted murder, Nilsen was sentenced to life imprisonment on 4 November 1983, with a recommendation that he serve a minimum of 25 years; this recommendation was later changed to a whole life tariff in December 1994. In his later years, Nilsen was imprisoned at HM Prison Full Sutton in the East Riding of Yorkshire.

English record producer (1929–1967)

English serial killer (1909-1949)

British murderer and last woman to be executed in the United Kingdom

English serial killer (1941–1995)

English serial killer

English serial killer (1899–1953)

British peer and missing murder suspect (born 1934)

British serial killer

British murderer (1942–2002)

British serial killer

Scottish serial killer (1947-2016)

British serial killer (teacup poisoner)

British International Brigade volunteer (1895–1937)

English serial killer and bigamist (1872–1915)

unidentified serial killer

British spree killer (1914–1942)

British serial killer

Scottish serial killer (1946–2022)

British serial killer (beast of Manchester)

Welsh serial killer

British murderer

British model and murderer

British man executed for murder

British murderer (1906–1971)

British murderer (1936–1962)