Warwick was born in Aston, Birmingham, England. He was drawn to music during the skiffle boom of the late 1950s, joining Danny King and the Dukes and playing in Birmingham pubs and other venues. Ray Thomas and Mike Pinder, who had played together in Hamburg with the Krew Kats, decided to form a group with the addition of Denny Laine, who had fronted the Diplomats, Graeme Edge, who had been a member of Gerry Levene and the Avengers, and Eccles—who changed his name to Clint Warwick by putting together the names of his favourite singer, Dionne Warwick, and his favourite actor, Clint Walker. The Moody Blues released one album with Warwick on bass, Go Now - The Moody Blues #1, whereas The Magnificent Moodies was released on Decca in the UK, with sleeve notes by Donovan and a different track listing. The album yielded the hit single "Go Now", which reached No. 1 in the UK in January 1965, and the Top Ten in the U.S. Warwick took one co-lead vocal on that album with Laine, on the track "I've Got A Dream". The closing track "'Bye Bye Bird" was issued as an overseas single and became a hit in France. Warwick was also on the EP The Moody Blues issued on Decca in 1964, and appeared on all their Decca singles, beginning with their debut, "Steal Your Heart Away", then "Go Now", "I Don't Want toGo On Without You", "Everyday", "From The Bottom Of My Heart ", plus "Boulevard De La Madeline" up to "Life's Not Life" in 1966. Warwick's and Laine's era of the Moody Blues was featured on various compilation albums on both vinyl and CD, such as The Moody Blues Collection. A later CD issue of The Magnificent Moodies in 2006 included the rare track "People Gotta Give" - a Pinder-Laine composition from the Boulevard De La Madeline French EP release. Film footage survives of the original line-up of The Moody Blues performing "Go Now" on BBC2's The Beat Room plus the first single's B-side "Lose Your Money " on Ready Steady Go! in August 1964 with Warwick and Laine performing, and has been re-screened in recent years. Feeling stressed by touring, Warwick left the band and his music career in 1966 to become a carpenter and spend time with his family. He released his first solo CD in 2002, and was working on another one at the time of his death from hepatitis at the age of 63.