Erection date: 26/1/2017
First Public Demonstration of Television, 1926
Members of the Royal Institution of Great Britain witnessed the world's first public demonstration of live television on 26 January 1926 in this building at 22 Frith Street, London. Inventor and entrepreneur John Logie Baird used the first floor as a workshop during 1924 - 1926, for various experimental activities, including the development of his television system. The BBC adopted Baird's system for its first television broadcast service in 1930.
IEEE Milestone in Electrical Engineering and Computing
From The Register: "On the afternoon of 26 January 2017 – exactly 91 years to the day since Baird demonstrated his mechanical apparatus to his Royal Institution guests – volunteers from IEEE gathered at 22 Frith Street for a ceremony to unveil a bronze street plaque dedicated to the invention of television." The IEEE is an American organisation.
Site: John Logie Baird and TV demonstration (2 memorials)
W1, Frith Street, 22
Two plaques to the same event, one British and one American.