Apparently the lady with the poor little cat has said she will get some proper cat food...but considering she was refusing to go to the vet I don't know if she will.
I'm up in Newcastle, otherwise I'd go round and take the poor thing myself, and am simply posting here because the person posting on Cat Chat (not the lady with the cat, someone the lady with the cat contacted for help - how confusing am I making things?!) didn't have any joy on there...so there's a bit of a chain here I'm afraid, hence the sketchy info.