OK, got printouts of the Hunts on the 1911.
Living at 2 Back 55 Weaman St, B'ham (near Colmore Circus)
Charles Hunt 46 Caretaker from Droitwich
Harriett Hunt 49 (she was 40 on 1901 census?) from Dudley
Alice Hunt 14 At School, born Worcester
Ellen Hunt 13 At School, born Worcester
Harry Hunt 4 born Birmingham
Total married years 17
Number of children born 5
Still living 3
So, the problems here. This census was carried out on 02/04/1911. Harriett was aged 40 as of 31/03/1901 but is only 49 some 10 years and a few days later.
It appears that another child that I didn't know about had been born (likely between 1901 and 1906) and has died since. I knew of Rose Harriet who died in October 1901, aged 13 months. It may take ages to identify the mystery child.
Having got the length of marriage (17 years), the date of marriage is between 1893 and 1894. Looked on GRO but to no avail. I'm just gonna have to contact Dudley and Worcester register offices to see if they have a marriage for Charles Hunt/Harriett Taylor.