Plaque: Victoria Foundation stone
Victoria, Queen of Great Britain and Ireland, Empress of India, laid with her own hand this foundation stone, 24th March 1886.
Site: Faraday, BBC and Victoria (3 memorials)
WC2, Savoy Place, 2
Built in 1886 this was originally the joint Examination Hall for the Royal College of Physicians and the Royal College of Surgeons. Its classical facade was modernised in the late 1950s when the top storey was added. High up it is inscribed, "Institute of Electrical Engineers, founded 1871". The IEE, who moved here in 1910, is now (2008) known as the Institution of Engineering and Technology.
Unrelated fact: The Bob Dylan video for Subterranean Homesick Blues was filmed near here, at the junction of Savoy Hill and Savoy Row. Thanks to London Daily Photo for bringing this to our attention. Wikipedia tell you more about it but they have the location wrong.