Ah,
Greenhalgh's in Notlob?
Now, meat and potato pie brings back fond memories of school dinners, which at our place were pretty good. Served with peas and lashings of gravy (about half a gravy boat would do), second helpings always available, the shortcrust meat and potato pie had to be the best dish out of that kitchen*. To this day I believe that both meat and potato pie and Cornish pasty are best cooked in a catering sized baking tray (also experienced in a hotel I lived in for a while).
* The head cook obviously believed in a balanced diet; meat and potato pie was normally followed by prunes or rhubarb