He attended The Scots College in Sydney, New South Wales where he was actively involved in sports and debating.
In 1946, he started work with the Macquarie Broadcasting network as a trainee. He swiftly moved to become a sport broadcaster and then the sporting editor for the network. In 1952, he was appointed assistant to Managing Director, Clive Ogilvy at the Network.
In 1954, he joined Ampol and quickly moved up the ranks – NSW Manager in 1956, Assistant General Manager in 1958, General Manager in 1963, Chief General Manager in 1965, Managing Director of Ampol Petroleum in 1970 and Managing Director of Ampol Exploration in 1971.
He retired from Ampol in 1987 at the age of 60 as he wanted “a change of diet”. After departing from Ampol, he was appointed to several boards.
Boards that he was Chairman included Australian Airlines (1987-1992), Australian National Industries (1992-1997), Australian Radio Network (since 1995), Gazal Corporation (1989-2004), Australian s Commission (1984-1994), Zoological Board of New South Wales (1973-1990 including Director) and Street Vincent’s Clinic Foundation (since 2000). Other boards that he has held directorships with include Australian Broadcasting Commission (1974-1977), Australian Institute of Petroleum (1977-1987) and Trustee Walkley Awards (1976-1987).
Harris has a long involvement in sport.
At Macquarie Broadcasting, he was a sports commentator and editors After joining Ampol, Harris continued to commentate on international tennis tournaments. During his time at Ampol, it used sport to sell its image as "The Australian Company" by sponsoring many sporting events.
His high level of interest and commitment in sport led to him chairing the Australian Olympic Federation 1984 and 1988 Fundraising programs.
In 1983, he was appointed the interim Chairman of the Australian s Commission and appointed Chairman in 1984 when the Commission was established. Major developments whilst he was at the Commission from 1984 to 1994 included the successful Aussie s Program (modified sport for children), the amalgamation the Australian Institute of and the Australian s Commission and three major Australian Government funding injections into sport - Australian s Kit (1988), Maintain the Momentum (1992) and Olympic Athlete Program (1994).
At Scots College, he was a member of the first X (cricket team), first XVI (rugby team) and tennis teams. From 1991 to 1994, he was a member of the successful Sydney Olympics 2000 Bid Committee.