Someone in Stockport searching for a service often expects a Stockport business, while “Manchester” searches can mean the city centre or the whole of Greater Manchester. A good local site is honest about where you actually work, and gives each genuine area something real to say: the jobs you have done there, how you get there, and what customers there tend to need. We would rather build five useful area pages than fifty thin ones.
We apply the same standards to our own website, and we will tell you plainly if an idea would look like a doorway page to Google.