So, in my fevered imagination, this is how the housing arrangements proceed:
1 - Brine goes to Hungary, never to return. Having discovered he has EU citizenship via his maternal grandparents (who were refugees from, let's say, what is now Lithuania) he spends his final years tootling around Europe, having fun but wishing Jenny was there <sob>. He spends all his money.
2 - Denise returns, having split from her ghastly lycra-clad husband. Within the week she has moved in with Alistair, with Jim's blessing. Jim decides to give the lovebirds space and moves into wherever Brian lived.
3 - It turns out that they actually need two vet nurses, so Paul takes the third room chez Josh. They don't actually have to pay rent, because Shula has vanished without trace (a mystery which is never resolved).
4 - Peggy leaves her entire estate, including the house, to a refuge for cats sadly disillusioned by their slaves. Jakob, who is no fool, immediately changes the locks, and Kate ends up in a yurt.
5 - Lower Loxley is struck by an Act of God and it turns out that Elizabeth forgot to renew the insurance.
Who have I forgotten?