Left to Right:
Phyliss Florence Allsop (1897-1956)
Charles Edward Stanley Allsop (1897-1958)
Minnie Kate Allsop (née Watkins - wife of Joseph - 1871-1954)
Joseph Henry Hunt Allsop (1871-1960)
Leslie Joseph Henry Allsop (1904-1972)

Charles was then serving in the Great War. Leslie is probably in the uniform of the Territorial Cadets