By the early 1960s he had been promoted to Editor of Panorama and later Head of Public Affairs at BBC Television and in this role was heavily involved in the news coverage of the assassination of U.S. President John F. Kennedy in 1963 and the subsequent reaction to the events in the UK.
His achievements in the role included the launch of the enduring Dad's Army and overseeing the transition of BBC1 into colour in 1969.
All the Moon landings of Project Apollo occurred during his tenure, and Fox allocated generous time on his network for coverage.
During this period he was quite vocal in his disapproval of the ultimately unsuccessful poaching in 1985 of Dallas from the BBC by fellow ITV contractor Thames Television.
Whilst at YTV, Fox was prominent in representing the managerial view in the industrial dispute between members of the ACTT trade union and the ITV companies, which blacked out the network for three months in 1979.