[19] Other analyses of Sutcliffe's actions have not found evidence that he actually sought the services of prostitutes but note that he nonetheless developed an obsession with them, including "watching them soliciting on the streets of Leeds and Bradford.

"[16] On 14 February 1967, Sutcliffe met 16-year-old Sonia Szurma, the daughter of Ukrainian and Polish refugees from Czechoslovakia, at the Royal Standard pub on Manningham Lane in Bradford's red-light district; they married on 10 August 1974.

McCann was last seen alive at 7:30 p.m. when she left her council house on Scott Hall Avenue, in the Chapeltown area of Leeds, walking past the nearby Prince Philip Playing Fields.

Sutcliffe picked up Jackson, who was soliciting outside the Gaiety pub on Roundhay Road, then drove about half a mile to some derelict buildings on Enfield Terrace in the Manor Industrial Estate.

On 9 October, Jordan's body was discovered by local dairy worker and future actor Bruce Jones,[47] who had an allotment on land adjoining the site and was searching for house bricks when he made the discovery.

He repeatedly bludgeoned her about the head with a ball-peen hammer, then jumped on her chest before stuffing horsehair into her mouth from a discarded sofa, under which he hid her body near Lumb Lane.

[2]: 107 Ten days later, on 31 January, Sutcliffe killed Elena "Helen" Rytka, an 18-year-old prostitute from Huddersfield, striking her on the head five times as she exited his vehicle at Garrards timber yard before stripping most of her clothes, although her bra and polo-neck jumper were positioned above her breasts.

Rooney's description of her attacker and his car closely matched that of Sutcliffe and his Sunbeam Rapier, which had been flagged by police numerous times in red-light areas in both Leeds and Bradford.

"[56] Based on the recorded message, police began searching for a man with a Wearside accent, which linguists narrowed down to the Castletown area of Sunderland, Tyne and Wear.

[61] Hill was returning home to her students' hall of residence in Headingley when Sutcliffe delivered a blow to her head before removing her clothes and stabbing her repeatedly in the chest and once in the eye with a screwdriver.

[12] On 2 January 1981, Sutcliffe was stopped by police with 24-year-old prostitute Olivia Reivers in the driveway of Light Trades House on Melbourne Avenue, Broomhill, Sheffield, South Yorkshire.

"[49] Sutcliffe displayed regret only when talking of his youngest murder victim, Jayne MacDonald, and showed emotion when questioned about the killing of Joan Harrison, which he vehemently denied having carried out.

Harrison's murder had been linked to the Ripper killings by "Wearside Jack," but in 2011 DNA evidence revealed the crime had actually been committed by convicted sex offender Christopher Smith, who had died in 2008.

After a two-hour representation by the Attorney-General, Sir Michael Havers, a ninety-minute lunch break and another forty minutes of legal discussion, Justice Boreham rejected the diminished responsibility plea and the expert testimonies of the psychiatrists, insisting that the case should be dealt with by a jury.

"[73] The choice by Chief Constable Ronald Gregory of Oldfield to lead the inquiry was criticised by Byford: "The temptation to appoint a 'senior man' on age or service grounds should be resisted.

The hoaxer was given unusual credibility when analysis of saliva on the envelopes he sent showed he had the same blood group as that which Sutcliffe had left at crime scenes, a type shared by only 6% of the population.

Eleven marches in various towns across the United Kingdom took place on the night of 12 November 1977, making the points that women should be able to walk anywhere without restriction and that they should not be blamed for men's violence.

The House of Lords held that the Chief Constable of West Yorkshire did not owe a duty of care to the victim due to the lack of proximity and therefore failed on the second limb of the Caparo test.

[84] Nina Lopez, who was one of the ECP protestors in 1981, told The Independent forty years later that Havers' comments were "an indictment of the whole way in which the police and the establishment were dealing with the Yorkshire Ripper case.

[85] The Byford Report's major findings were contained in a summary published by the Home Secretary, William Whitelaw, disclosing for the first time precise details of the bungled investigation.

Byford described delays in following up vital tip-offs from Birdsall, who on 25 November 1980 sent an anonymous letter to police, the text of which ran as follows: "I have good reason to now [sic] the man you are looking for in the Ripper case.

[73] Byford said: "The failure to take advantage of Birdsall's anonymous letter and his visit to the police station was yet again a stark illustration of the progressive decline in the overall efficiency of the major incident room.

[87] Later that year, in September,[88] he was arrested in Bradford's red-light area for being in possession of a hammer, an offensive weapon, but he was charged with "going equipped for stealing" as it was assumed he was a potential burglar.

I hasten to add that I feel sure that the senior police officers in the areas concerned are also mindful of this possibility but, in order to ensure full account is taken of all the information available, I have arranged for an effective liaison to take place.

[101] Detectives were able to eliminate him from forty of these cases with reference to his lorry driver's logs which showed which part of the country he was in when he was working,[103] leaving twenty-two unsolved crimes with hallmarks of a Sutcliffe attack which were investigated further.

On 23 March 2010, the Secretary of State for Justice, Jack Straw, was questioned by Julie Kirkbride, Conservative MP for Bromsgrove, in the House of Commons seeking reassurance for a constituent, a victim of Sutcliffe, that he would remain in prison.

"[145] An application by Sutcliffe for a minimum term to be set, offering the possibility of parole after that date if it were thought safe to release him, was heard by the High Court on 16 July 2010.

[162][163] This Is Personal: The Hunt for the Yorkshire Ripper, a British television crime drama miniseries, first shown on ITV from 26 January to 2 February 2000, is a dramatisation of the real-life investigation into the murders, showing the effect that it had on the health and career of Assistant Chief Constable George Oldfield (Alun Armstrong).

Sue MacGregor discussed the investigation with John Domaille, who subsequently served as assistant chief constable in the West Yorkshire Police; Andy Laptew, a young detective who conducted interviews with Sutcliffe; Elaine Benson, a detective who was part of the investigative team; David Zackrisson, who worked on the false leads, the "Wearside Jack" tape and the Sunderland letters; and Christa Ackroyd, a local journalist.

[166] A three-part series of one-hour episodes, The Yorkshire Ripper Files: A Very British Crime Story, by filmmaker Liza Williams aired on BBC Four in March 2019.