Just to add my opinion. I was almost convinced that it was Longford House but various details decided me against it, namely the extension to the right seemed the same but the chimney is in the wrong place, and the white lines across the front of the building are not there. Also the road looks too small for the Watling Street?
The ground floor could have been changed and the additional bits and pieces added to the front however so maybe the other changes were made too. It is certainly very similar.
The white stones on the edges of the building are very distinctive so perhaps the same architect, therefore local to the Cannock area.
Hope someone has the answer.