Barbara Dickens, I was a LEO programmer in Intercode on the Leo 326 installed by the Dept of National Savings. I started in 1968 and was trained by the Post Office trainers before working for DNS at Lytham St Annes. I remember the days very well as I did mainly maintenance which meant finding old code to delete to make room for any amendments. After a few years I moved onto ICL System4 machines programming in Usercode and COBOL before joining SMBP and working in COBOL and machine code on Univac 1100 series.I eventually moved onward and upward into management and consultancy but I still remember my Intercode days and the carol tunes made from holes in the printers format tapes.