English scientist and MI5 counterintelligence officer who wrote the controversial bestselling international book Spycatcher.
He worked at the Admiralty's Research Laboratory during World War II and started working as a Principal Scientific Officer at the Services Electronics Research Laboratory in 1946.
He published the 1991 book The Encyclopaedia of Espionage, but it did not have much impact.
His father was (George) Maurice Wright, one of the founders of signals intelligence during World War I.
One of the devices he worked on inventing was eventually attributed to scientist Leon Theremin.