Sites for businesses are almost always placed by where the business is physically located, and not by the area served.
If you business has a single locality which has its own category, then it should be submitted there, and not here.
If your business has multiple localities through the West Midlands Metropolitan Area or further afield, please look for the most geographically-specific category that covers them all.
Sandwell Metropolitan Borough is one of the seven unitary authority areas which make up the West Midlands Metropolitan Area. It neighbours are Birmingham (to the east), Dudley (to the south-west), Walsall (to the north), and Wolverhampton (to the north-west).