Category
page 1GCHQ cryptographers
Joan Clarke
English cryptanalyst
Conel Hugh O'Donel Alexander
British cryptanalyst, chess player, and chess writer (1909–1974)
John Tiltman
British cryptographer
James H. Ellis
British cryptographer (1924-1997)
Shaun Wylie
Mathematician and World War II codebreaker (1913-2009)
Malcolm J. Williamson
British mathematician and cryptographer (1950–2015)
Clifford Cocks
British cryptographer