In a HardTalk Extra interview screened on 10th March, Patrick O'Connell spoke to the legendary television producer and executive, Sir Jeremy Isaacs.
Sir Jeremy Isaacs set up Channel Four in the early 1980s
In a career spanning nearly half a century, Sir Jeremy Isaacs has profoundly shaped British television.
His greatest achievements include producing the landmark documentary series The World at War, and launching Britain's fourth terrestrial television channel, Channel Four.
He tells Patrick O'Connell about his fears for the channel he once referred to as "his baby", which has courted controversy - and won ratings - with the reality show Big Brother.
He also talks about the outlook for public service broadcasting as the BBC braces itself for the government's decision on the renewal of its charter.
This will define the BBC's role for the next ten years, taking account of the digital revolution.
HARDtalk Extra can be seen on BBC World at 0430 GMT, 0830 GMT, 1130 GMT, 1530 GMT, 1930 GMT, 0030 GMT.
It can also be seen on BBC News 24 at 04:30 and 23:30.