Summers and Tim Parry founded Big Life Management in 1986. The pair also ran Big Life Records, which released music from such artists as The Orb, Yazz, Coldcut, De La Soul and The Soup Dragons.
Summers was also the manager for Lisa Stansfield, Soul II Soul, Badly Drawn Boy, Klaxons, Scissor Sisters and London Grammar, among others.
Big Life describes Summers as a "master of artist development" and "an expert in the American market." His artists have sold more than 60 albums and 72 million singles around the world, including more than 100 top 40 hits in the past 40 years, according to the company. Read the Big Life's full statement here.
Summers was awarded the Peter Grant Award in 2003 and the Strat Award at the Music Week Awards in 2007. He also served as chairman the Music Managers' Forum and was vocal in such artist-related issues as the extension of copyright, secondary ticketing and VPL. Additionally, he helped set up nonprofit organizations Featured Artists' Coalition and Julie's Bicycle.
His autobiography, Big Life, was published in 2013.
Born in 1944, Summers enrolled in military school at age 12 and joined the army three years later. He served in Hong Kong and Malaysia, where he was a radiographer.
Summers is survived by his wife Dianna; his daughters Katie, Rio and Georgia; his granddaughters Claire, Lila and Rose; and his brother Don.
The manager was remembered on social media by several artists and other music industry figures following his passing. Read their tributes below.