Peacock spent the majority of his career at
Middlesbrough, also playing for
Leeds United and
Plymouth Argyle. He joined
Middlesbrough in 1954 and became a regular in the side in 1958 alongside
Brian Clough. Clough scored the majority of the goals, partly due to Peacock's unselfish attitude in front of goal. Clough joined
Sunderland in 1961 and the following season Peacock scored 24 in 34 games. In 1964, he moved to
Leeds United for £55,000 to help
Don Revie's team with promotion, which was achieved that season with Peacock scoring 8 goals in 14 games. He stayed at Leeds for a further three seasons scoring 30 goals in 65 games, yet more frequent injuries forced his sale to Plymouth Argyle for £10,000 in 1967 where he played only one season before being forced to retire due to injuries in 1968. == International career ==