History of Offshore Radio, interviews with Johnnie Walker and Tony Benn, 4 minutes 40:
Interesting interview with Kenneth Branagh, who listened to pirate stations in the early 70’s, 8 minutes:
http://www.channel4.com/news/articles/arts_entertainment/film_tv/those+who+rocked+the+boat/3044387
Info via Mike B via RadioAnoraksUk