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  Science and technology at the National Archives
 Crystal Palace built in six months 1851 Wallpaper design of 1851 featuring the Crystal Palace
National Archives, Kew
Enlarge on linked site
 
 Agreement to construct Channel Tunnel 1875 Channel Tunnel plans, 1875
National Archives, Kew
Enlarge on linked site
 
 Whittle patents jet 1930 Sketches towards the design of Whittle's jet engine
National Archives, Kew
 
 Bletchley tackles Enigma code 1939
 
 Colossus is first computer 1943 The Colossus computer used at Bletchley Park in 1943
National Archives, Kew
 
 RAF acquires its first jet 1944