D'oh. Looking at your location, that should have been my first guess :roll:
Bath Spa would fall foul of the same problem as Chippenham, and whereas CM may have a case, BTH does not. From here, the WML is not a branch; it is the principal trans-region route (the South-West's equivalent of TPE, just not to the same degree).
OK; let's try another...
West Coastway
2 platforms
Although serving a well-populated area, this station takes its name from one of the nearby smaller places and not the larger area, which shares part of its name with one of the few High/Low Level station pairs in Britain.