Prepare yourself.
Moving back from Europe to Bristol this year. We can't get back into our house because our tenants refuse to move out despite masses of notice. We may be homeless when the children start school. We have no credit rating without our address. We can't get on the electoral register.
You can be so screwed over if you've rented out your house and the tenants, even corporate, moneyed tenants, refuse to move. It takes three to five months to get an accelerated possession order. I would advise anyone to give notice for five months before you need the house.