They're for the UFH controller and Fuse Spur for the Towel Rail. They're going in the back of the vanity out of the way and sight and reach.
They didn't want anything on show in the bedroom. They've got some Silk wallpaper that cannot be damaged as it's something ridiculous to replace and damages easily. And they don't want any Switches or Stats on show full stop. The bathroom who have supplied the lot really should of advised them better, already had to swap the UFH stat for one they can remote program off their phone.