Robert Murphy. was the computer programmer on the LEO 326 computer in use for the National Savings Bank in Glasgow. I used Intercode and CLEO. The computer was decommissioned in 1974 with the data and systems transferred to an ICL 4/72.
My final task was to print off computer programs and documentation, label them up and package them for sending to the National Savings Archives. If I recall correctly there was a similar exercise going on with the hardware but I was not involved with that.
So there was lots of material kept but I do not know what became of it. It might be worthwhile contacting NS&I to find out what happened to the material and whether you can have it for your project