FENSA & building regulations (health and safety) state that fire escape hinges must be provided for windows in all habitable rooms, on ground and upper floors. All escape windows are required to open to 90-degrees, to allow the emergency services to have access to the building or as an escape route for anyone trapped within. A habitable room does not include utility rooms, dressing rooms, bathrooms, kitchens, WCs, or shower rooms. If you have more than one window in any room, there is no requirement for two fire escape windows. If there is a door which can be used as means to escape, then the windows in that room don’t need to be fire escapes.