Inverted benchmark
Introduction
The photograph on this page of Inverted benchmark by Neil Owen as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Neil Owen Taken: 10 Sep 2011
It's not unheard of to find a cut benchmark with the arrows above the datum line, but the initial feeling about this example is that it is not level. Could it be that this mark has been repositioned in a rebuilt wall? If so, the reference is now unreliable. Maps of the 50-60's list a benchmark close by, so maybe it has indeed been 'recycled' as a feature. See http://www.bench-marks.org.uk/bm39499 for the Benchmark Database, and Image] for the junction view.