May not be the right person, but mention him in case.
Free index to the 1921 census has Henry J Humphrey, born 1881, Kent, living in Portsmouth.
Address is 24 Collingwood Road Southsea, schedule 285.
He is the head.
Wife is Amy C Humphrey, born 1881, Shoreditch, London.
There are six children.
Eldest is Harold, born 1911. Youngest is Ernest J, born 1920.
Can't see a birth registration for Harold. The others are registered in Portsmouth, and have mother's maiden surname Davis.
Is there a marriage for Henry and Amy?

Helped with that address by the 1920 Kelly's Directory of Hampshire (Portsmouth streets) which has Henry James Humphrey, marine store dealer, at 24 Collingwood Road.
There's a 1925 Portsmouth newspaper report of an inquest into the death of Violet May Humphrey of Collingwood Road, age 2 years 11 months. Father Henry James Humphrey.
Sadly, Harold died 21 May 1940, age 28.
https://www.cwgc.org/find-records/find-war-dead/casualty-details/2502069/harold-humphrey/Back to the '21 census index, James and Sophia Glen and family are in Birtley, Durham.