If the font size on their map is anything to go by, Pemberton is of a similar size to Liverpool, Manchester and London, and dwarfs Nottingham, Leicester and Hull. Which is odd, because Pemberton appears to be at what we people who work in Liverpool refer to as the other end of the M58: the motorway which famously doesn't go anywhere. Apart from Wigan, that is. That's Wigan, where the pies come from; not Pemberton.
In fact, if you zoom in and in some more on the map, you discover that Pemberton seems to be a small offshoot of Wigan—which is a bit odd for a major city.
I wonder how much Pemberton village council paid Google to give their place so much prominence.