This is a one bedroomed purpose built flat. It has one living room, one bedroom, one kitchen, one hall and one bathroom. The aim is to remove the door between the kitchen and hallway and widen the opening by about 18 inches to make it all one walk in space. I was told by a builder that it still needs a door between the hall and kitchen for fire reasons, while another said there is no need. Does anyone know what the regs are in this situation.