Watney died at his home of 20 Charles Street on 7 November 1919. His funeral was held at Woking cemetery, where his father was also buried."Mr. Claude Watney", The Times, 10 November 1919, p. 20. He left an estate of £573,0881920 Probate Calendar, p. 224. including a collection of coaching prints which were sold at auction by Christie's.Art Prices Current, William Dawson & Sons, p. 36. His widow subsequently married the motorist Bernard Weguelin.
