He played in the first ever football league team and game for Scunthorpe United against Shrewsbury Town in August 1950.
He was also made a life member of Scunthorpe United.
Scored winning goal in Worksop Town's most successful run in the FA Cup enabling them to reach the third round proper in 1955–56 season.
Mosby also played 3 games scoring two goals for Huddersfield Town, just before the end of World War II, this was in the War Cup.
This biographical article related to association football in England, about a midfielder born in the 1920s, is a stub.