Orton's eventual success as a writer, which began not long after their release from prison, put a distance between the two men that Halliwell found difficult to handle.

[3] On 9 August 1967, Halliwell mortally injured Orton with nine hammer blows to the head, then overdosed on pentobarbital (Nembutal) sleeping pills.

[12] This is presumed to be a reference to Orton's description of his promiscuity; the diary contains numerous incidents of cottaging in public lavatories and other casual sexual encounters.

[13] British experimental music group Coil recorded three tracks titled "The Halliwell Hammers" for their 1995 album Worship the Glitch.

The two primary members of Coil, John Balance and Peter Christopherson, were romantic partners through most of the band's existence, and much of their work was inspired by or dedicated to gay icons and personalities of the past.

[citation needed] The stage version of Prick Up Your Ears, written by Simon Bent, opened on the West End in London at the Comedy Theatre on 17 September 2009.

[15] In 2016 the same museum purchased at auction The Cat Screen, a four-panel described as "an important part of 1960s cultural history as well as an engaging piece of art work", for £8,000.