Did you change the locks/front door/ toilet seat when you moved house?
Seems common sense to change the locks, although I hadn't actually thought about it until recently. My friend is moving and the seller they bought house from lives a short walk from the house 🤔Seller dragged their heels for ages and left the house quite untidy. They left a number of keys for the door. Friend wonders how many other copies of the key might exist.