Hi Robert,
BVRI2 stands for British Isles Vital Records Index Version 2
Now I have found Ann Sanders with a different date to the one you had
but same PARENTS.
SANDERS, Ann Christening
Gender: Female
Christening Date: 14 May 1848 Recorded in: Toft, Cambridgeshire,
England
Father: John SANDERS
Mother: Lydia
Source: FHL Film 1040559 Dates: 1683 - 1876
Hope this helps will work on the others
Kind regards
Lori Mitchell