When the shop was sold while he searched for larger premises in London, much of the original equipment was purchased by Chris Blackwell, the future founder of Island Records.
"My Name Is Jack" by Manfred Mann was recorded at Trident in March 1968, and helped launch the studio's reputation.
From 1972 to 1975, Sheffield, under one of his companies within the Trident Group, was also the original manager of the British rock band Queen, as well as other acts.
The press release and website[7] promised exclusive photos and untold stories about the artists who recorded at Trident, as well as copies of the original Queen management contracts from 1972.
Together with three of his sons founded the advertising agency Tableau, using his knowledge of the entertainment industry and experience from early desktop publishing.
[8] The App has been downloaded over a quarter of a million times to date[9] and won awards for its innovation to music technology.