Commentary on Sections Part 4: Standards of Housing Chapter 1: Overcrowding Sections 44 and 45: Overcrowding notices
Sections 44 and 45 give the council the power to issue a notice where they believe an HMO is, or is likely to become overcrowded.   An overcrowding notice must, for each room, either stipulate the maximum number of persons who may occupy the room or specify that the room is unsuitable for occupation.  This makes clear the maximum possible sleeping arrangement in the house.