BRIDOL is the British Sundial Society's Register of Fixed and Mass Dials, which gives detail and photographs of about 8000 fixed sundials and 3000 mass dials in the UK.
Some of these are in private gardens, but the majority are publicly available.
The dial has a bar gnomon with thorn nodus. The numbering is designed to be read from the origin of the gnomon, except along the base side, but 4pm and 6pm are written as VI and IV respectively. The three arcs may be a memory of earlier declination lines, or possibly a misunderstanding of the geometry.
