There was also a Probate File for Agnes :
PERRIN - Agnes - of 4 Greyhound Road Mansions**, Hammersmith, Middlesex - Widow - died
20 November 1932 : PROBATE - London - 29 December to Percy Kennett COOK*, Inspector.
Effects : (Pounds sterling) 56-6s-4d
[Source: England and Wales Probate Calendar @ ancestry.com ]
[* Don't know if related to Percy Kennett COOK ? He was born, Kent, ENG, 1875.
**Agnes was at same Greyhound Road address in 1911. ]