I hear what you're saying, but any of these in my opinion would have made the world a better place if they had been put to death (I know some of them were, but not time to go through and check them all!) - these are all convicted serial killers in the UK, no shadow of a doubt:
Beverley Allitt - aka
Angel of Death; paediatric nurse who killed four babies in her care and injured at least nine others, convicted in 1991
Levi Bellfield - aka
The Bus Stalker Killer, murdered two female students, attempted to kill a third, and is suspected of up to 20 more attacks and murders. Is the prime suspect in the murder of schoolgirl
Milly Dowler
Robert Black - Scottish schoolgirl killer; convicted of three murders, suspected of many more
Ian Brady and
Myra Hindley - aka
Moors Murderers - murdered five children, aged between 10 and 17 years old, and buried them on
Saddleworth Moor.
Leslie Bailey - killed at least three young boys in and around London in the 1980s
William Burke and
William Hare - notorious body snatchers in Edinburgh in the 19th century.
George Chapman - poisoned three women, suspected by some authors of being
Jack the Ripper
John Childs - murdered six individuals; jailed 1980
Robert George Clements - doctor who murdered one wife but committed suicide before being arrested; three previous wives died in suspicious circumstances
John Christie - aka
The Necrophile[
citation needed] who killed seven women (including his wife) and disputably one infant between 1943 and 1953 and hid them in his house and garden at
10 Rillington Place
Mary Ann Cotton - British Victorian killer, said to have taken more than 20 victims
Thomas Neill Cream - aka
Lambeth Poisoner, began his killing spree in the United States then moved to London. Hanged 1892
Amelia Dyer - murdered infants in her care; executed in 1896
Kenneth Erskine - aka
Stockwell Strangler; jailed in 1988 for murdering seven pensioners
Steven Grieveson - aka
The Sunderland Strangler, murdered three teenage boys in Sunderland, Tyne & Wear in 1993 and 1994
John George Haigh - aka the
Acid Bath Murderer and the
Vampire of London. Active in England during the 1940s. Was convicted of six murders, but claimed to have killed 9. Executed in 1949
Anthony Hardy - aka the
Camden Ripper; convicted of three murders; suspected of at least four
Trevor Hardy - aka
The Beast in the Night; killed three teenage girls in Manchester from 1974 to 1976
Colin Ireland - aka
Gay Slayer; killed five victims in the early 1990s
Michael Lupo - aka
Wolf Man; convicted of four murders and the attempted murder of two others
Patrick Mackay - confessed to killing 11 people
Peter Manuel - Scottish murderer of seven, suspected of killing 15; executed in 1958
Robert Maudsley - killer of four; killed three in prison
Peter Moore - businessman who killed men at random in Wales
Donald Neilson - aka
Black Panther; killed four people including heiress Lesley Whittle
Dennis Nilsen - killer of 15 (possibly 16) men between 1978 and 1983
Colin Norris - nurse convicted of killing four patients in Leeds hospitals
[1]
William Palmer - aka
The Rugeley Poisoner
Mark Rowntree - 19 year old who killed four people at random
Amelia Sach and Annie Walters - murdered an unknown number of babies put up for adoption
Harold Shipman - doctor convicted of 15 murders; a later inquiry stated he had killed at least 215 and possibly up to 457 people over a 25 year period
George Joseph Smith - aka
The Brides in the Bath killer
John Straffen - child-killer and Britain's longest serving prisoner until his death on 19th November 2007
Peter Sutcliffe - aka the
Yorkshire Ripper; convicted in 1981 of the murders of 13 women and the attacks on seven more from 1975 to 1980
Fred West and
Rosemary West - aka
House of Horrors murderers in Gloucester. She was convicted of 10 murders and are both believed to have tortured and murdered at least 12 young women between 1967 and 1987, many at the couple's home in Gloucester, England. He committed suicide in 1995 while awaiting trial
Steve Wright - aka
The Suffolk Strangler;
killed 5 women in six weeks around Ipswich in late 2006
Graham Frederick Young - aka
The Teacup Poisoner; killed three individuals from 1962 to 1971