This was the nearest I could find for 1851.
BATTLEY
Amelia - 29 - wife - born St. John Westminster, Mddx.
Amelia - 4 - born St. George, Southwark, Surrey
Priscilla - 1 - born St. John, Mddx.
HO107; Piece: 1479; Folio: 224; Page: 40;
St. John, Westminster
I don't know if Burnham is on line, but if you start a seperate thread asking for a lookup, maybe someone going to Essex Record Office, may look for you. Or if there is an LDS centre near you, you could order the films in.