London exhibitions reviewed: Secrets, autonomous vehicles and AI ZDNet

London, and particularly the Science Museum, has a long, solid history of mounting exhibitions on information technology topics, from its 1991 reconstruction of Babbage's Difference Engine to the industrial robots it featured in the late 1990s (which health and safety insisted should be behind glass), their humanoid fellows in 2017, and the 2014 exploration of the information age. This summer, the city has three such exhibitions running simultaneously, two of them at the Science Museum. You could summarize them as: 1) What have you done for us lately?; 2) What are you going to do for us?; and 3) Why is it taking so long? The first is GCHQ's romp through the history of keeping secrets, Top Secret: From ciphers to cyber security. This moves from the earliest times through Mary Queen of Scots' coded letters to World War II (GCHQ's formation, Bletchley Park and Alan Turing) and the Cold War.