John, I should think, although Frederick was born Prittlewell!

1861 RG9/1061 fol.92 p.59 Orford Rd, Walthamstow
in household of Thomas Millington, Lead & Glass Merchant
Thomas Fuller serv un 24 Gardener & Groom Prittlewell Essex
1861 RG9/351 fol.56 p.5 24 St. Alban's St, Lambeth
John Fuller head m 26 Metropolitan Police Constable attached to L (or could be S) Division Essex Prittlewell
Mary Fuller wife m 27 " wife Essex Leigh
Mary " dau 5 Scholar " Gt. Coggeshall