Born on February 2, 1940, in Chelsea, London, UK, and passing away on August 16, 2000, Caddy was a notable UK guitarist, session musician, and prolific arranger and producer, primarily recognized for his work with Avenue Recordings.

Caddy began his musical journey as a founding member of the Tornados, a band that emerged as serious contenders to the Shadows in the 1960s British instrumental scene. The Tornados are best remembered for their million-selling single "Telstar," released in 1962. They achieved further success with three additional instrumental tracks, "Globetrotter," "Robot," and "Ice Cream Man," all of which reached the domestic Top 10 in 1963. However, the rise of Merseybeat, with its focus on vocal performances, rendered their instrumental style less popular.

Unlike his bandmates, Caddy received classical training, having served as head chorister and leader of the school orchestra at Emanuel School in Battersea. He was a treble in the Westminster Abbey choir and studied violin at the Royal Academy of Music. His career gained momentum when he joined the skiffle group "Five Nutters," which was a staple at their KKK Club in Willesden. After a brief period as "Bats Heath and the Vampires," the band transitioned to a professional outfit known as "Johnny Kidd and The Pirates" in 1958. The group, one of the few UK homegrown rock 'n' roll acts held in high regard, made their television debut on ITV's "Disc Break" in 1959 performing "Please Don't Touch." Much of the band's appeal came from Caddy's dynamic guitar riffs; however, due to his self-doubt, another guitarist played the lead on the iconic single "Shakin' All Over." This track notably knocked Cliff Richard from the top of the charts in August 1960 but resulted in Caddy receiving only a standard session fee of 15 guineas. By the following year, Johnny Kidd & The Pirates had fallen outside the Top 50, prompting Caddy and his fellow band members to adopt the stage persona of the "Cabin Boys" while backing Colin Hicks, Tommy Steele's brother, who was immensely popular in Italy.

After returning from Italy, where Hicks proved to be a challenging employer, Caddy found new opportunities by responding to a Melody Maker advertisement, joining the Tornados alongside Clem Cattini, Heinz Burt, George Bellamy, and Roger LaVern. The band was initially formed to support artists such as Ken Charles, Pamela Blue, John Leyton, and Mike Berry at the RPM Studio in London, under the guidance of producer Joe Meek. After a less successful release with "Popeye Twist," which Caddy co-wrote, the Tornados recorded the ethereal instrumental "Telstar" as a simple backing track. Meek transformed it into a defining 1960s instrumental hit overnight, despite Caddy later describing Meek's RPM sound as "unadulterated lift music." Throughout the Tornados' peak celebrity and as influential sidemen, Caddy remained a key member, even as the band's popularity began to wane following the departure of bassist Heinz Burt and the underwhelming performance of "Dragonfly" in 1963. Caddy left the group after the 1964 release of "Away From It All," which featured four of his compositions.

Although he had the potential to achieve solo stardom, Caddy preferred to work behind the scenes. As noted by Clem Cattini, "He never achieved his potential because he didn't believe in himself." Caddy took on the role of house arranger, producer, and Musical Director for Avenue Records, a budget label specializing in cover versions of contemporary hits, where he also performed as a session musician. He later moved to a similar position in Canada before returning to England in 1975. In the years that followed, Caddy participated in a remake of "Telstar" with a reformed Tornados but chose not to pursue a public career, although he occasionally contributed to 'RPM Appreciation Society' events. His last public performance took place in 1991 at an event in Lewisham, where he played the classic "Telstar."