Wearing a pale pastel blue coat with diamond brooch and a bold lip, Her Majesty appeared in good spirits as she was captured exiting the event.
The 92-year-old was also seen clutching a small gift believed to be a present from the staff.
The Queen is known to book her staff Christmas parties at The Goring and in 2016 held a private lunch for all her senior servants.
The privately owned hotel is known to be a favourite among royals with the Middletons also booking the establishment as their base for the royal wedding in 2011.