What is a bedroom?
There is no statutory definition of the term 'bedroom' in the UK. The term is used to describe a room used for sleeping in and where you would expect to find a bed or other such piece of furniture designed for sleeping on.
The Valuation Office Agency Rent Officers' Handbook makes some attempt to explain what a bedroom is:
"The simple test to apply is, for this type and size of property in this or a similar area, how has the property been let, and how do occupants use the accommodation? The size of the room is irrelevant. A room that would never be thought of as a bedroom or living room in a large country house might well be perfectly acceptable to most people, for those same uses, in an expensive, densely populated city."
An indicator that a room can be used as a bedroom could be that at least a small single bed will fit into it, and in most cases it will have a window, although there is no legal requirement.