For the significant portion of his professional life, he was renowned as "The Man from Del Monte". This dignified, white-suited, Panama hat-adorned gentleman became the public persona for an American brand of fruit juice, advertised in commercials that aired on British television screens for approximately 20 years.
Prior to pursuing his passion for acting, Jackson's initial occupation was as an air crew cameraman for the Fleet Air Arm, where he received training at the esteemed Royal Navy School of Photography. Later in his career, he leveraged his qualifications to establish his own photographic, film, and recording studios within the Hampden Gurney Studios complex situated at Marble Arch in London.
Describing himself as a 'jobbing actor', Jackson began his acting career as a bit player with local repertory companies and subsequently developed a career in radio (his preferred medium) and on stage, including performances at the Old Vic and three seasons with the Royal Shakespeare Company at Stratford-upon-Avon.
He shared the stage with the legendary Ginger Rogers in the musical Mame at London's Theatre Royal in Drury Lane. His commanding voice was also effectively utilized in numerous documentaries and BBC radio dramas.
Jackson's acting career on screen commenced in 1958, during which he often portrayed police or military officers, priests, or academics.