Queen's Christmas speech

The Queen's Christmas speech, Christmas message or the Queen's speech, was an annual speech (PROSE: Loose Wire) given by Queen Elizabeth II of the United Kingdom on Christmas Day during the 20th (AUDIO: Relative Dimensions) and 21st centuries. (TV: The Christmas Invasion, The End of Time; PROSE: Loose Wire)

History
While his granddaughter Susan Campbell and great-grandson Alex Campbell were celebrating Christmas in the TARDIS with him and Lucie Miller, the Eighth Doctor wanted to watch the Queen's 1953 Christmas speech using the Time-Space Visualiser, as that was a "great year". (AUDIO: Relative Dimensions)

On Christmas Day 2006, the Queen's speech was cancelled after an invasion by the Sycorax resulted in the entire Royal Family standing on the edge of the roof of Buckingham Palace. It was replaced by a broadcast from Prime Minister Harriet Jones, pleading to the Doctor to help. (TV: The Christmas Invasion)

Wilfred Mott sat down to watch the Queen's speech in 2009, but was instead contacted by a mysterious woman. He asked if anyone else could see the woman, but his granddaughter Donna Noble replied that she thought the Queen should switch to trouser suits. (TV: The End of Time)

Upon arriving in 2010 on Christmas Day, Fitz Kreiner wondered whether he had missed the speech. (PROSE: Mad Dogs and Englishmen)

Alice Wu slipped upstairs to try out her new mobile phone, which she recieved for Christmas, as her Alice Wu's mother, father, and grandmother sat down to watch the speech. (PROSE: Loose Wire)

Behind the scenes
In the real world, the Queen's Christmas is typically recorded a few days in an advance before being broadcast on Christmas Day at 3:00PM on either BBC or ITV. In 2006, the Queen issued her Christmas speech as scheduled.