The policy on this kind of thing varies from shelter to shelter - there isn't a set of rules that all have to follow. Now that there are more cats being kept indoors over here, there are inevitably more indoor cats ending up in shelters. That means that most shelters will rehome some cats to indoor homes, but it depends on the cat's individual needs. A cat that has previously been outside will probably only be rehomed to somewhre where it can go outside, but a cat that has previously been kept indoors or that is sick or disabled will be looking for an indoor home. As to rehoming kittens to indoor homes - that varies. Some will accept an indoor home, some will not. Most will advise the cat be kept in at night. None would encourage an unspayed female having free access outdoors - in fact, none would be in favour of a cat remaining unneutered.Originally Posted by maverick_kitten
The large majority of London cat rescue groups will not re-home a cat to a household that does not have a garden or a catflap.
As far as fostering kittens goes - surely both kittens and mother need to be kept indoors until the former are vaccinated and neutered and the latter is neutered? booktigger is from the UK and fosters so she might know better the requirements for fosterers.