Bletchley Park:
Alan Mathison Turing, Bletchley Park
William Gordon Welchman, Bletchley Park, MITRE
Intelligence:
Reginald Victor Jones - physicist
Major-General Sir Vernon George Waldegrave Kell, "K" -- founder (1909) and first Director of the British Security Service, otherwise known as MI5 (until 1940)
Charles Henry Maxwell Knight OBE, known as Maxwell Knight, "M" British intelligence officer in charge of MI5 departments dealing with counter-subversion on home ground
Alan Mathison Turing, Bletchley Park
William Gordon Welchman, Bletchley Park, MITRE
Intelligence:
Reginald Victor Jones - physicist
Major-General Sir Vernon George Waldegrave Kell, "K" -- founder (1909) and first Director of the British Security Service, otherwise known as MI5 (until 1940)
Charles Henry Maxwell Knight OBE, known as Maxwell Knight, "M" British intelligence officer in charge of MI5 departments dealing with counter-subversion on home ground
Sir John Cecil Masterman OBE; chairman Twenty Committee, Double Cross System
Thomas (TAR) Argyll Robertson -- MI5 -- XX
SBS: elite forces: Roger James Allen Courtney MC, Jumbo, established the Special Boat Sections during WWII
SBS: elite forces: George Patrick John Rushworth Jellicoe, 2nd Earl Jellicoe, Commander of the Special Boat Regiment Middle East
Brigadier Simon Christopher Joseph Fraser, 15th Lord Lovat and 4th Baron Lovat, DSO, MC, TD, JP, DL
Lieutenant-Colonel John Malcolm Thorpe Fleming Churchill, ["Mad Jack"] DSO & Bar, MC & Bar