Looking at the death index, the best fit I have is Charles Patmore (no middle name) d Q2 1961 Essex South Western; this links (perhaps, I don't have a subscription to this bit) with probate of one Mella Charles Henry Patmore in 1961.
Lots of material on a namesake who was an Australian Army chaplain, killed as a result of Allied bombing of Amboina in 1943, but his date of birth is substantially wrong and was son of Mr and Mrs O Patmore of Waltham Cross.
FreeBMD indexes his marriage to Ethel; she has a middle iinitial M. There are a number of possible death records for an Ethel M Patmore; would be worth getting the marriage cert to find out what her middle name was and therefore trace her b and d.
I've checked two separate indexes and can find no Patmore births 1916-30 with mother's maiden name Richardson. However, if Ethel had previously been married (might have been a war widow) then any births wouldn't show up. Would need the m certificate to be sure of her maiden name.
Might be worth trying street directories of the 1920sand 1930s; long shot would be the phone book, but as comparatively few people had phones then.....
