A collegue tells me that in his area, one large series of adverts in one of the big phone books by one national advertiser actually has many small adverts, all with local addresses, all across the area. They are desperate to look like a local company, and, to be fair, if they are prepared to open an office in every town to get an address, then fine.
Unfortunately, it turns out that the addresses being given are in fact not genuine. One turned out to be a derilict garage, whilst another, perhaps more worryingly, turned out to be a lady’s home, who said she had no knowledge of the advertiser and certainly hadn’t given permission.
Rest assured that this company has full permission and authority for both the addresses we use!