The design was published in a series of articles in the influential British Wireless World magazine, beginning in May 1947.
He continued his interest in hi-fi and writing for Wireless World after his move to Ferranti, and became Group Director of Engineering with Rank Xerox in 1974 before retiring in 1976.
[2] The Williamsons lived in a large town house (originally the Manse of the adjacent church) near the King's Theatre.
His father, who ran a car hire business, was a practical man, who undertook all the maintenance work- including plumbing, furniture-making, and converting the whole house from gas to electricity- himself, with the assistance of family members.
[3] When young, Williamson caught tuberculosis from a maid, which left him weakened for the rest of his life and prevented him joining any of the Armed services during the war.