Oliver starred in his first feature, Romance of a Horse Thief for United Artists, in 1971 with Yul Brynner, Serge Gainsbourg, Eli Wallach and Jane Birkin, quickly followed by Tis Pity She's a Whore with Charlotte Rampling.
Other features include: The Stud co-starring with Joan Collins, Arabian Adventure with Christopher Lee and Emma Samms, A Nightingale Sang in Berkeley Square with David Niven, Dick Turpin directed by J Poulson, The Wicked Lady with Faye Dunaway, Denholm Elliot and Alan Bates, Mata Hari with Silvia Kristel and Christopher Cazenove, Johann Strauss with Mary Crosby, Cobra Mission directed by Larry Ludlum, When Darkness Falls with Ray Winstone, Sherilyn Fenn and Tim Dutton, Vendetta directed by Mikhel Halfstrom, The Brylcreem Boys directed by Terrance Ryan, Rampage with Sam Janus, Grizzly Falls with Bryan Brown and Richard Harris, Mozart in Turkey directed by Elijah Moshinsky.
Oliver became popular starring in the TV series Arthur of The Britons in the early 70s, followed by Luke's Kingdom directed by Peter Weir in Australia. He went on to star in the much-acclaimed action series Adventurer and Smuggler.
Diverse TV roles have since included The Knock, Paper Man, Rosie Futures with Pauline Quirke, Sharpe with Sean Bean, The Vanishing Man, Real Women, Flash Cluedo, Danube Princess, Clinic Under Palms and, most recently, Lucy Sullivan is Getting Married.
Oliver has also directed for theatre: Long Day's Journey Into Night, The Millionairess, Arsenic and Old Lace and the feature film Knight of The Miracles, which he also co-wrote. Oliver also staged and choreographed Hair in Holland and Israel.