I came across this milestone on the old A417 by chance; it's not marked on the OS map. It is near the Five Mile House near Duntisbourne Abbots on a section of road which has been replaced by a parallel dual carriageway.
Uploaded to Geograph by Philip Halling on 29 November 2014
Photo © Philip Halling, 29 November 2014. Licensed for reuse under this Creative Commons licence