Geoffrey J. Bulmer,
a British mathematician and physicist, and managing director of his own company, BEC Navigation Limited  . As chess programmer in the early 80s, he is author of the program Chessnut, which participated at the European MCC 1981, the European MCC 1983 and the WMCCC 1984. An improved version of Chessnut was also commercially released in 1981 by Acornsoft as Atom Chess for the Acorn Atom.
- Geoffrey J. Bulmer's ICGA Tournaments
- Geoffrey Bulmer | LinkedIn
- Geoffrey J Bulmer (@GeoffreyBulmer) / Twitter
- BEC Navigation Limited