From Google: "Previous to Brooker's work, Alick Glennie who was an MOS external user of the machine had developed his personal automatic coding scheme in the s

From Google: "Previous to Brooker's work, Alick Glennie who was an MOS external user of the machine had developed his personal automatic coding scheme in the summer of 1952. Glennie's system, which he called autocode, was very machine-dependent and was not released to other users." -- Early computing in Britain, 1948-1958, pg 257 https://books.google.com/books?id=NAOhDwAAQBAJ&pg=PA257#q=glennie%20brooker https://books.google.com/books?id=NAOhDwAAQBAJ&pg=PA257#q=gl...