"Nice One Cyril" is a single by Cockerel Chorus written by Harold Spiro and Helen Clarke. The song title is a reference to Cyril Knowles, a left back who played for Tottenham Hotspur. It was released before the 1973 Football League Cup Final where Tottenham played Norwich City. It reached No. 14 on the British single chart after Tottenham won, and its writers Spiro and Clarke received an Ivor Novello Award for Best Novel or Unusual Song in 1974.

Answer this question: who sang nice one cyril nice one son? Let's think fast. Stream of consciousness:
The relevant information is: "Nice One Cyril" is a single by Cockerel Chorus written by Harold Spiro and Helen Clarke. So the final answer is Cockerel Chorus.