Hollingsworth studied at the Guildhall School of Music, and, by 1939,
was conducting concerts with the London Symphony Orchestra. The
following year, he joined the orchestra of the Royal Air Force as an
associate conductor, at the same time orchestrating wartime
documentaries made by the Crown Film Unit. After the war, Hollingsworth
alternated working on feature films with conducting for ballet and
classical music, frequently performing at the Royal Opera House, Covent
Garden. In 1945, he joined Cineguild to work under
Muir Mathieson as assistant musical
director, notably involved in the
Sergei Rachmaninoff score (the
hugely popular Second Piano Concerto) for
Brief Encounter (1945).
In 1954, he replaced
Frank Spencer
as musical director at Hammer Studios. As music supervisor, he worked
on some of Hammer's best-known films, such as
The Curse of Frankenstein (1957)and
Horror of Dracula (1958). He also occasionally
free-lanced for other studios, involved in such notable films as
The Wrong Arm of the Law (1963),
the
Peter Sellers comedy
Heavens Above! (1963) and
Joseph Losey's
The Damned (1962). Hollingsworth
remained in his position at Hammer until his untimely death in 1963,
aged just 47, of pneumonia.