His regular position was at full back. He played professionally for Manchester United – for whom he made one league appearance during the 1975-1976 season
Grimshaw joined Manchester United as an apprentice in April 1974, turning professional in December of the same year. He also made one league appearance, but after that did not feature again in the United first team
He was released at the end of the 1978-1979 season and joined non-league Mossley, where he played 22 times the following season.