Jenner was educated at Westminster School and Sidney Sussex College, Cambridge, where he attained a first-class honours degree in Economics in 1963, aged 20.

[2][3] Appointed as a lecturer at the London School of Economics, after four years he left to manage the then up-and-coming band Pink Floyd.

[citation needed] John "Hoppy" Hopkins, Peter Jenner, Joe Boyd, Ron Atkins, Barry Miles, Michael de Freitas, John Michell, Julie Felix, Michael Horovitz and Nigel Waymouth and others, met at Hoppy's flat in Queensway, London, twice a month.

Once everything was organised and in place, two musicians, Dave Tomlin and Joe Gannon led a small procession down Portobello Road to promote the fayre.

Alongside childhood friend and music producer Andrew King, Jenner co-founded Blackhill Enterprises, in 1966, where they produced songs and albums for Pink Floyd, T. Rex, Ian Dury, Roy Harper, The Clash, The Disposable Heroes of Hiphoprisy, Robyn Hitchcock, Baaba Maal, Sarah Jane Morris, Denzil, Susheela Raman and Eddi Reader (Fairground Attraction).

Jenner was also a contributor to the Blackhill Bullshit,[7] a magazine which was distributed to concert promoters and agents in order publicise artists.

Pink Floyd, then an unknown band, began to receive paid bookings including at the Marquee Club in March 1966 where they were watched by Jenner.

The band played mostly rhythm and blues songs, but Jenner was impressed with the strange acoustic effects that Barrett and Wright created during their performance.

[8] Jenner traced Waters and Mason to their flat,[9] and with his business partner and friend Andrew King was subsequently invited to become their manager.

Using inherited money they set up Blackhill Enterprises[10] and purchased new instruments for the band, as well as equipment which included a Selmer PA system.

[13] Jenner's voice can be heard at the start of Pink Floyd's 1967 "Astronomy Domine", the opening track on the album The Piper at the Gates of Dawn (UK edition).

[10] After Blackhill Enterprises disintegrated in the early 1980s, Jenner and Sumi set up Sincere Management, located on Bravington Road in West Kilburn, which managed a range of artists including Billy Bragg, Eddi Reader, Sarah Jane Morris, Robyn Hitchcock, The Unbending Trees, Sid Griffin and Outside Royalty.

He argues that the music industry "persuaded themselves they could follow these files around and every time they were used a small amount of money would come magically to the companies.

"[21] Jenner has long argued that governments should impose blanket licences for music online to counter copyright infringement, with a fee being collected by internet service providers (ISPs).