Hi Marc
A long time waiting for this one, somehow it slipped through the net and they were hard to find but this may be them and not quite where you expected ...
1851 - 44 Bishop Street, Portsea, Hampshire
Benjamin Mills, head, 37/39? Musician? b. London
Betsey, wife, 24, b ditto
Benjamin son (age has a black mark over it so cannot read) b. ditto
HO107/1658
Folio: 132
Page: 19
Regards
Biker