One of my two surviving cousins both 85 asked me that exact same question today.
Henry, he thinks died in Hounslow. I do too. His last days were spent there. My best estimate 1948-49
Beatrice died shortly before, buried accordingly to my mother their youngest daughter in Southhall, best estimate 1946-7
Over the years I have physicly looked her grave in the grossly neglected burial sites, most recently 2 weeks back with my own daughter. In hope to find this age of death.
I did search with my mother when living too. I do wonder if they are buried together.
I contacted Ealing council who issue a standard letter responce sugesting I join ancestry. ie, go away.