These tables were historically used as dining tables for the staff at Chatsworth. They can be seen in the photograph above, taken in the early 20th century, in the Servant's Hall. This was the room where all except the most senior servants would gather to eat their meals.
In country houses, there was often a strict hierarchical seating arrangement for servants depending on their specific role. The laundry maids at Chatsworth had separate, self-contained quarters and only ate in the Servant's Hall once a year on Christmas Day.