The dining room was used for a scene at the inn at Lambton in the 2005 adaptation of Pride and Prejudice. It is quite a small room which would have been used by the family for their private quarters. The plaster ceiling dates from the early 1500s and is decorated with a Tudor rose and Talbot dog in recognition of Sir Henry Vernon's marriage to Anne Talbot.
In the window recess are carved figures in the oak panelling - these are thought to be Queen Elizabeth of York and her husband King Henry V11. I loved the windows at Haddon with their beautiful examples of early stained glass.
Here is a photo of the ceiling showing the Talbot dog device.