On 12 October of the same year, Mayo, a year-old teacher, set off from her London home to hitchhike north. Six days later her body was found in woodland near Hardwick Hall, close to the northbound carriageway of the M1. She had been strangled. In , detectives from Cheshire Police and Derbyshire Constabulary revealed on Crimewatch that they suspected the murders of Ansell-Lamb and Mayo were committed by the same person. In , analysis of dental records led police to believe that Fred the Head could have been John Henry Jones from Trevor , near Wrexham in North Wales, who had gone missing in Leyden's body was found the following day on wasteland behind Rochdale Road's now-demolished Spread Eagle pub.
She had been raped and beaten to death with a brick. It was later thought that the offender might have been serial killer Trevor Hardy , but DNA eliminated him as a suspect in In , a prisoner became a suspect in Confait's murder when an incriminating conversation between him and a fellow inmate was overheard, but because he and the person he claimed to have been with at the time of the offence each maintained that it was the other who committed it, neither of them could be charged with it.
The case led to changes in police procedures. In , police revealed that a link had been found between Stratford's murder and that of year-old Weedon. Weedon had been taking a shortcut home through an alleyway in Hounslow six months after Stratford's death when she was hit on the head with a blunt object before being thrown over a fence into the grounds of an electricity substation and raped. She died in hospital a week later. Both murders featured on the BBC programme Crimewatch in September , where it was said that they were sexually motivated and, thanks to new DNA techniques, were now known to have had the same culprit.
Parravincina's death has been informally linked to Peter Sutcliffe. It is believed that he may have been staying in London, specifically Alperton , at the time.
The murder was investigated as a possible " Yorkshire Ripper " attack before Steel, who was mentally handicapped, confessed as detectives had promised he could see a solicitor if he said he had committed it. Since his acquittal several investigators have suggested Ripper Peter Sutcliffe was indeed the killer, pointing to the fact that Sutcliffe knew Wilkinson, had previously argued with her father over his advances towards her, and had mutilated one of his confirmed victims earlier on the day of the attack.
