He was also a maker of television documentaries , broadcaster and author .
Dennis Michael Marks ( 2 July 1948 -- 2 April 2015 ) was head of music at BBC Television in the 1980s and from 1993 to 1997 was general director of English National Opera .
Dennis Michael Marks was also a maker of television documentaries , broadcaster and author .
Dennis Michael Marks ( 2 July 1948 -- 2 April 2015 ) was head of music at BBC Television in the 1980s and from 1993 to 1997 was general director of English National Opera .