Black, White and Grey

Some young children, whose parents are working in India, are being brought up by an aunt in a small English village called Fieldside. The aunt lets them have a lot of freedom, but there are some "Rules of the House" which must be obeyed. When the cat has some lovely kittens, one black, one white, and one grey, they are not allowed to keep them, because there would then be too many cats than the Rules allowed, but they are given three weeks in which to find homes for them.