Conversation so far:
is the boat that rocked a true story
According to director Richard Curtis, The Boat That Rocked, though inspired by real British pirate radio of the 1960s, is a work of historical fiction.
does pirate radio still exist in the united kingdom
Although pirate radio in the United Kingdom peaked throughout the 1960s and again during the 1980s and 1990s, it remains in existence today.

Question: when did pirate radio first become widespread
Self-contained rewrite: when did pirate radio first become widespread in the uk