Actually, I only own two of the four cats: Fish, and half each of Toad and Golux. If I left, I assume the co-owner, i.e. the Evil Landlord, would take over my halves. That only leaves Fish, and first_fallen has dibs on her. So it would be a wrench to leave the kitties, but not an impossibility.
Re: Things to do in London when you're undead