Exercise 5.3 - Solution

Sample answer (Eddie Waring).
Eddie Waring was a British commentator associated with It's a Knockout. He was already known as a rugby league commentator, and he described the farce in a formal voice.

To check before writing more: the years he served, which editions he covered (British or international), and any specific catchphrases, using a dedicated history of the programme. The same method works for any other name in the section.