Adam John Hart-Davis (born 4 July 1943) is an English polymath, comprising scientist, author, photographer, historian and broadcaster, well-known in the UK for presenting the BBC television series Local Heroes and What the Romans Did for Us, the latter spawning several spin-off series involving the Victorians, the Tudors, the Stuarts, and the Ancients. He was also a co-presenter of Tomorrow's World, and presented Science Shack. Currently he presents How London Was Built and Just Another Day on History UK.