Still can't find this family at all anywhere in 1901.

driving me nuts.
i was wondering if it is possible to do a lookup on place of birth.
Mary ann HART was born in NZ?

? can you look up by place of birth? (can't be too many mary HART/ASHBRIDGES born in nz in 1901 census...)
just grasping at straws here really.
i am assuming they will be in Hull, or possibly london.
does anyone have any suggestions on what i can do to find this family?
Help greatly appreciated.

Constance