if all the foreign born ppl in the UK...?

[Bongo]

Disappeared overnight, literally disappeared- what would happen to the UK housing and rental markets? Now before you all go off on a troll hunt, it's for an economics module I'm taking part time at the local uni about economic benefits (and costs) of immigration. So, would the house prices drop because all of a sudden there's far less demand for housing? Would rental prices also drop? Would there be a rise in inflation because low paid unskilled migrants working in agriculture would be gone so we'd have no way of getting food to the table? Would we be able to house UK homeless in houses hitherto occupied by said migrants? Any other consequences (economically) you can think of? Cheers.