Lightwater's a fair step from North-East Derbyshire...
It's possible but seems unlikely to be the same people. It's a family business, five generations as I said, with only the one shop. No idea where their farm is, apart from Cornwall, and they don't do mail-order, I checked.
A 700-odd mile round trip to pick up a couple of pasties from here seems a bit excessive too so we'll have to wait until September.
Re Warrens. I'm not sure but I think we prefer Rowes, or even better, Philps.