I think some of the student market may be affected which is fairly important in some areas, for example where I life in South Australia. There are wealthy students from OS, but there are also many who are doing it on a shoestring, working somewhat illegally cash-in-hand in restaurant jobs and the like which may suffer because people just aren't eating out as much. And so on. They and their parents may not be able to justify the cost of sending their children OS for their education.
Other factors may be that the rental market is also affected by the fact that people just can't pay what they can't afford. If unemployment increases, then there will be individuals, couples, and families who will be breaking rentals they previously had no trouble paying. People will do whatever it takes to survive, moving from houses to units, back with their family, share-housing more, living in caravan parks and so on. There will be an increase in the homeless. Let's hope it doesn't get to that stage.
Those skilled immigrants who have moved here on the promise of work, who can't find that work, or resent the high taxation (relative to home) a percentage of these people might decide to return home.
I'm really playing devil's advocate here. But I think if it can happen in the UK, it can happen here. I can see scenarios where that could occur.