Rachel Margaret McLean (born August 1971) was a second-year English Language student at St. Hilda's College, Oxford, when she was murdered on 14 April 1991 by her boyfriend, John Tanner, a 22-year-old British-born New Zealand national and classics student at the University of Nottingham. The killing occurred a day after McLean had turned down Tanner's marriage proposal.
On 13 April 1991, Tanner arrived in Oxford by train, later than planned, and stayed with McLean at her Argyle Street house. The following day, the two watched an FA Cup semi-final together and were last seen alive by neighbours around 4:30 p.m. That evening, Tanner strangled McLean and tied a ligature around her neck. According to his later confession, he spent hours searching for a place to hide her body, eventually emptying a cupboard under the stairs and dragging her body through a gap under the floorboards of the house, crawling under the hallway to conceal her in the recess beneath her own bedroom floor.
Tanner returned to Nottingham the next day and began an elaborate deception, including writing a love letter to McLean and telling police and journalists a fabricated story about a "long-haired man" who supposedly offered McLean a lift home from the station. He participated in press conferences and even a filmed reconstruction of their supposed final movements, with a policewoman standing in for McLean. This reconstruction and subsequent witness statements began to undermine his account, as witnesses placed Tanner at the station but not McLean.
McLean's disappearance was reported after she failed to appear for a tutorial and exam on 19 April, and was publicised from 22 April. Police became convinced she was dead by 28 April and expanded searches to sewers and cesspits near her home. Investigators discovered that the houses on Argyle Street, though lacking basements, had underfloor cavities due to underpinning. On 2 May 1991, McLean's body was found in one such cavity, covered in carpet. Tanner was arrested within the hour at a pub in Nottingham and initially refused to answer questions, but later confessed to the killing.
Tanner was charged with murder on 4 May 1991. At a four-day trial at Birmingham Crown Court, he pleaded not guilty but admitted to strangling McLean during an argument, stating he "flew at her in a rage." On 6 December 1991, a jury returned a majority verdict of 10 to 2, convicting Tanner, who was sentenced to life imprisonment. He was released from prison in early 2003 after serving a little more than 11 years, returning to live in New Zealand, where he completed his degree. In 2018, Tanner was jailed for assaulting his partner.
McLean was remembered at a memorial service at Oxford's University Church of St Mary the Virgin and a funeral in Poulton Methodist Church. St Hilda's College established the Rachel McLean Prize in her memory, awarded to students who improve college life or raise the college's profile.