He has worked as a fundraiser for vulnerable people for 30 years and in March 2012 Millar underwent a 12-hour operation to install a bionic retina in his right eye to help research into future treatment for blindness.
He was appointed Commander of the Order of the British Empire (CBE) in the 2010 Birthday Honours.
Millar was born with retinitis pigmentosa at St George's Hospital, which is now The Lanesborough Hotel, Hyde Park Corner. Despite poor vision he attended mainstream state school Enfield Grammar School from 1963–70 and then read law at Queens' College, Cambridge from 1970–73.
After gaining his law degree, Millar moved into the music industry initially as a guitarist and artist, putting out records with Atlantic and WEA and working with ex-Velvet Underground singer Nico. He found his niche as a record producer in the early 1980s when he started Power Plant Studios. Power Plant became the most fashionable haunt of the London 1980s music scene. After working with post punk band Weekend in 1982, his breakthrough came in 1984 with seven consecutive Top 10 albums; including Eden by Everything but the Girl, Working Nights by Working Week, and especially the multi-platinum selling Diamond Life by Sade.
Production on other significant hit records in the period include Fine Young Cannibals (Fine Young Cannibals), Colin Hay (Looking for Jack), Big Country (The Seer), Patricia Kaas (Je te dis vous), Kane Gang, Bhundu Boys and Randy Crawford amongst others. Millar arranged the music for the film, And Now... Ladies and Gentlemen... Millar's song "Rich and Poor", co-composed with Colin Vearncombe, was recorded by Randy Crawford on her 1989 album, Rich and Poor. His 2003 solo album, Kiss and Tell was released by the Nujaz record label.
Millar has worked as producer, arranger, musician, songwriter and mixer, with Eric Clapton, John Mayall, Sting, Chrissie Hynde, Alison Moyet, Brand New Heavies, Sir Willard White, Ruthie Henshall, Go-Betweens, Kane Gang, The Style Council, Herbie Hancock, Courtney Pine, Wayne Shorter, The Christians, Plastic Bertrand, Gibson Brothers, Mick Hucknell, Elvis Costello, Peter Gabriel, Zakir Hussein, Bill Summers, Bruce Hornsby, Airto Moreira, Baba Olatunji, Michel Legrand, Anita Hegerland, Some Like It Hot, Johnny Hates Jazz, China Crisis, Jocelyn Brown, Yusuf Islam, Big Audio Dynamite, Gil Scott Heron, Jalal, Tracey Spencer, Françoise Hardy, Malcolm McLaren and Catherine Deneuve]. His productions have sold over 55 million copies worldwide and have been awarded 150 platinum, gold and silver awards. They have won every major music award including Grammy and Brit Awards.
He is also a champion for vulnerable people and was awarded the 2002 Windrush Award for this work. He has made campaigning records and produced fund-raising concerts as Patron for UNICEF, UNHCR, Oxfam, Namibian Freedom Fighters, Chilean Solidarity and Oxfam. He is a long-time trustee of The Vietnamese Boat Peoples' Appeal.
Millar trained as a recording engineer, classical and jazz musician and arranger, and has trained dozens of top engineers and producers, including Jim Abbiss the producer of Arctic Monkeys and Adele. He also works as a mentor and inspirational guide to FTSE business leaders and people in the public eye, with famous clients from the world of business, music and politics.
In 2005, he produced MP4's EP album "House Music" which included a version of The Beatles', "Can't Buy Me Love". In 2010 he produced the 12 track MP4 album "Cross Party".
Millar is a patron of The Music Producers Guild, which he helped found in 1987.
Millar was executive producer of the major worldwide series of concerts to commemorate the 50th anniversary of the death of Édith Piaf, with shows in Carnegie Hall, New York, The Royal Albert Hall London and major venues in France, Germany, Russia, Europe and the Far East. He has been collaborating with Australian singer/songwriter Eran James whom he met through Elton John in 2010.
He is currently Chairman of Blue raincoat Music and of CMO Artist Management and Patron of Finding Rhythms, who record and release music from prisoners in UK prisons.
He has been a trustee of Creative & Cultural Skills UK since 2009, is a trustee of The Vietnamese Boat Peoples Appeal, a patron of anti-suicide campaign CALM and Global Advisor to the UN Young Voices mission.
He was married to American painter Ellen Trillas from 1979 to 1997. they had two children, Scarlett and Crusoe. he has been with his partner and long time friend Shelley Davies for twenty years.
In addition to those listed above, Millar's work as a record producer includes credits on the following:-Hope and Glory – Tom Robinson Band
Wonderful Life – Black
Nouveau Monde – Pierre Schott
Paris – Malcolm McLaren
Mickey Hart's Mystery Box – Mickey Hart
Urban World Music – Hiroshima
House Music – MP4
Cross Party – MP4
Singles Collection – The Bluebells
In T.R.O.U.B.L.E. Again – Vic Godard
Ive Mendes – Ive Mendes
Sound of the Style Council – The Style Council
Sungrooves – Mark Riva
In The House – Dimitri from Paris
Shev and the Brakes – Shev and the Brakes
To Touch You – Tyrone Berkeley
"My Favourite Town" – POLA