The staff sit on both sides of the table while having Christmas lunch. In every other episode the staff all sit on one side of the table.
Mr. Cuthbert Rumbold says that Grace Bros is located in London.
At 23:23, Trevor Bannister - who is dressed as Long John Silver and has his right leg tied up to appear as though it's a stump - loses his balance and almost falls down the stairs. He regains his balance and nervously laughs, but fails to deliver the rest of his line to Wendy Richards whose character Miss Brahms was complaining of looking like Gary Glitter. She realizes what almost occurred and lends Bannister her arm to help him descend the remaining stairs safely.