[WillPS]

Central is much more meaningful than "Granada" in any possible way.

Central means the central part (the Latin "centrum" means just that: midway, middle of something), there's nothing wrong about that

Totally agree. Other than perhaps Channel and TSW, Central was probably the most aptly named station there was. Others described an area larger than their actual coverage area (Scottish) or only part of their region (Yorkshire, TVS and most extremely of all Harlech).