[1] Noskwith's parents, Chaim (Charles) and Malka (née Ginsberg), were Eastern European-born Jews who set up a clothing manufacturing company in Germany.

[1] The family created another textile company, Charnos, in Ilkeston, Derbyshire, England,[2] that would become the basis of Noskwith's post-war life.

[1] His first attempt to work as a codebreaker was turned down because of his German birth and upbringing, but it seems that the security eligibility rules were revised in May 1941 thereby enabling him to enlist.

[4] He worked in Hut 8, focusing on the German navy's Enigma machine, decrypting the Kriegsmarine's coded wireless traffic from 1941 to 1945,[5] and subsequently on other ciphers.

Noting the contribution of Jewish staff at Bletchley to the foundation of Israel after World War II he referred to Noskwith's offer of his services in 1947 to Walter Eytan, who responded "of codebreakers we have plenty!".