George Johnson Armstrong
George Johnson Armstrong (1902 – 10 July 1941) was the first British citizen to be executed under the Treachery Act 1940. Only four other British subjects were executed under this Act; Jose Estelle Key (a Gibraltarian), Duncan Scott-Ford, Oswald John Job (born in London of German parents) and Theodore Schurch.
Armstrong was born in Newcastle and was a marine engineer by occupation. He was tried on 8 May 1941 at the Central Criminal Court (the Old Bailey in London) and convicted for communicating with the German Consul in Boston, Massachusetts, to offer him assistance before the United States entered the Second World War.