Our newish neighbours have asked if we want to graze our sheep on their hay fields (for horses) over the Winter. When I asked their CPH number they said they didn't have one, yet they had someone else's sheep on there last Winter. It would take the pressure off our grazing but I'm certainly not going to move my sheep on there without one. I assume it's also illegal for a landowner to have farm livestock on the land without a CPH, even if it belongs to someone else, but can't find any references. I don't understand their reluctance to phone up and get a CPH number. There must be one somewhere on the system already as the land was farmed until about 15 years ago.