John Fletcher, I was a maintenance engineer for approximately 20 months on the Leo 3 at British Steel site Ravenscraig Motherwell in the late 60’s. I was employed by English Electric Computers at that time who also serviced the process control computers in the strip mill. Our Leo training took place at the Post Office Edinburgh site. Great training and experience as I remember. a good foundation for the rest of my computer industry career. I remember the Leo has been fairly reliable and therefore not needing much attention. Spent more time with the document reading/paper tape generating data processing data.. Christchurch Dorset is now home. .Tel. 01202 255870 mobile 0748 838 4414