They will both be put up at a hotel by Sony i am sure - at a location close to/where they have to do press from. they must have also been staying in central London over the last few press days as opposed to Tom’s place because he lives further away.
It’s really up to the talent’s choice and wether they want to wake even earlier to drive or not. When in LA Sony also puts Tom up but we know he stays with Z. You’re not contractually obligated to stay in the accommodations arranged they just have to be provided for you. Because we didn’t get a hotel sighting like we did with Dune press I’m inclined to believe they’re using his London house. Also people notoriously like to be in their own space if they can.