Only for certain foods.
Some place names have a protected status... so it's only "Champagne" when it's from the Champagne Region in France. Otherwise it's sparkling wine.
For another example "Aberdeen Angus" beef has restricted use. It needs to have been reared in Scotland for at least 9 months before being slaughtered (if I remember correctly).
West Country Farmhouse Cheddar almost certainly isn't restricted, so the answer would probably be yes.
It is restricted. You can only call it that if it's made in a certain way in certain West Country counties.
Edit- within Somerset, Dorset, Devon and Cornwall.