Looks like Alfred probably died around 1949-50
1950 Electoral Roll
Julia still at 34 Abingdon Road presumably with their two sons (under voting age )
1952 Electoral Roll
Julia with Marguerite Halfpenny (and the boys)
107 Dovehouse Street, Chelsea
1959-1965 at 2 Caversham Street, Chelsea
1959-62 Julia, Marguerite, and both sons listed
Sebald P born 1936
Serbert G born 1934
1963-64 Julia & both sons
1965 Julia & Sebald
Also
Travel Record on FindMyPast
9th August 1946
Hull to Rangoon
Alfred & Julia
sons SGH Green aged 12 & SPW Green aged 9
Address Limmer Lane, Felpham, Bognor Regis, Sussex
Vet surgeon