St Leonards-on-Sea, East Sussex

Mathematical Gazetteer of the British Isles

Alan Turing spent much of his youth at Baston Lodge, St Leonards, near Hastings [1].
See THIS LINK

References (show)

1. Hodges, Andrew. Alan Turing - The Enigma of Intelligence. (Burnett Books, 1983); Unwin Paperbacks, 1985. p.6

The Mathematical Gazetteer of the British Isles was created by David Singmaster.
The original site is at THIS LINK.