Congratulations Mr. Brokenshire, you’ve just killed every buy-to-let mortgage. of which there were 1.8 million even back in 2015. It’s a standard clause in every single one of those mortgages that they be rented out on a six or 12-month shorthold assured tenancy. The reason being that in the event of default the bank or building society understandably wants to be able to sell the place without having to deal with an immovable sitting tenant.
My thanks to a commenter here for that point about BTL mortgages. I could look up which one but the better half insists I do shopping right now.