John Alfred Cotterill (1863-1950) was a manager at the Sheffield Banking Co. He had apparently retired by 1915 and launched Cotterill & Co as a machine-cutter of files. It was based at St Thomas Street. In 1922, the Sheffield directory recorded that Cotterill & Co had acquired Davis, Turnbull (a tool manufacturer). Another firm that operated at St Thomas Street was Thomas Raynes & Son Ltd. When this firm was wound up in 1924, Cotterill’s acquired i....