Hi Susan
I did wonder that, but had never seen it abbreviated to that before. Also I am only just beginning research in Leek and wasn't sure that they had warehouses there at that time. I am used to that as an occupation in Manchester and Salford, but think of Leek as being more rural, which is probably a huge mistake.
BTW, love the photo of your Grandad, he looks very impressive in his uniform.
Thanks for your help.
Linda