Lavington, S., (2019) Early Computing in Britain, Ferranti Ltd. and Government Funding, 1948 — 1958, Springer Computer History Series. A valuable addition to the exposure UK computing developments in the early years of computers with a focus on the initiatives taken by the Ferranti Company, in particular with their Mark I. LEO is only referred to in Appendix D, see https://www.springer.com/gp/book/9783030151027
