Hi there,
I don't know if this is of any interest, but at Loughborough Heritage Railway Station, there are some old railway timetables on a wall, and I noticed that they said Staffords, Netherfield on one, and Stafford & Co Ltd on the other. One was May 1950, and the other was September 1952 - and as of around February this year, they were both still there - framed on a wall.
Hope this helps.
S