These diagrams show the internal layout of Hedingham Castle. The black areas indicate solid walls. The top image is the ground level floor. The main entrance to the castle was on the floor above this so the ground floor was used for storage. Access to this floor was via the circular staircase shown in the bottom left hand corner. The triangular sections show the locations of the windows. The windows on the outside are only narrow slots but they widen through the thickness of the wall to allow as much light in as possible. The walls are so thick that small two small rooms and the circular staircase are built into them.

The area to the bottom of the diagram indicates the location of the forebuilding. At Hedingham this has been destroyed so the diagram shows a rough outline to indicate its position.

The top floor provided sleeping space or private chambers for the Lord of the castle. Again there are a series of small rooms built into the thickness of the walls. It may be in one of these smaller chambers that the Lord and his wife slept leaving the main area for the rest of the family and retainers. The spiral staircase extended up from this floor to the roof that had corner towers from which lookouts could keep watch on the surrounding countryside.