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.
Hour lines on upright and cross members. Angle of cross to the horizontal is suspect. Memorial to Henry Willett d 1905 which appears to be the date of the dial.