For twenty years and more, John Billingsley's research has concerned the exploitation of on-line computer systems. In Cambridge he led a team pioneering the use of multiple linked single-board minicomputers for control system simulation and for research into the optimisation of hierarchical systems. He now heads a robotics group at Portsmouth Polytechnic researching into such topics as the 'Craftsman Robot' for intelligent adjustment of a factory product, and the development of a six-legged mobile robot base. He maintains a close contact with industry, and a number of his designs are in regular production.

A member of several IEE committees, he has organised many colloquia concerning robotics and microcomputer applications. He is the author of two books on experimental robotics for microcomputer enthusiasts, and for some years has organised the Euromouse Maze contest, for small robot vehicles. He has been a consultant to the BBC television series 'The Computer Programme', and to Thames Television's 'Database'.