Clue: Surrealist dunking fish factory in gin, as weird (5,8)
Answer: SPIKE MILLIGAN
Explanation: Surrealist dunking fish factory in gin, as weird (5,8)
An envelope ('dunking') of PIKE ('fish') plus MILL ('factory') in SIGAN, an anagram ('weird') of 'gin as', for the main writer of *The Goon Show*, and the surreal television comedy series starting with Q5.