And thus google satellite view confirms it's just empty fields...
Edit: a slightly zoomed out google maps view will show the area with the labels a little better, like this:
http://maps.google.com/maps?f=q&source=s_q&hl=en&...
2nd Edit:
It's possible that this is all a misunderstanding, and not a 'fake entry', there is a farm directly under the area called 'Argleton', and it wouldn't be a first time for a farm to have it's own postal code, and then the name of the farm being assigned to the postcode. Thus that farm MAY be 'Argleton Farm' or such, and google picked up on it thinking it was a town name.
I've known of 3 cases of this happening in my (limited) wandering around the UK during my life, although those cases were on OS maps, not google maps.
