Lodger problem

If he’s allowed to use your washing machine maybe you could suggest nicely to him to just ask if he needs help with the operating instructions. It might be enough of a gentle nudge to get him moving in the right direction.

lodgers have rights so you cannot just ask him to leave, how long was his lease initially? How much notice was in the agreement? His lease will not state how often he has to wash his bedding and his and your levels of cleanliness may differ.

You have to be careful to follow the laws regarding this or you could find yourself severely out of pocket or he may be allowed to stay for the whole of his lease.

Don’t use this. It is not the type of agreement you need for a lodger.

www.rocketlawyer.com/gb/en/sem/room-rental-agreement?

I'm in no way recommending these people, but send the link to show that
there are such legalities available.

Give him the address (or better still a business card) of the nearest laundry shop?
Do you have access to his room as a part of your letting agreement?
You do have a legal letting agreement don't you? If not, see a solicitor and get him to sign one.

tell him you have got a relative coming to use the room? Although i'd be inclined to be clear why you are terminiating his rental.