Elizabeth II (born as Elizabeth Alexandra Mary) has been Queen of the United Kingdom and Head of the Commonwealth since 1952.
Elizabeth II first met Sir Topham Hatt in 1952, when he was presented to her by his son-in-law, Henry Regaby, the Governor of Sodor. Elizabeth II first came to meet the residents of Sodor after her coronation in 1953. Gordon was honoured by pulling her train and Thomas sorted the coaches for it, while Edward cleared the line ahead. She was greeted and honoured by Sir Topham Hatt at Tidmouth, and told the controller that she had a splendid run and wanted to meet the engines. She returned to the Mainland the next day, after speaking specially to the engines that had prepared the Royal Train.
In 1995, her son the Prince of Wales visited the Island of Sodor. He told the engines that the Queen had told him all about them, and agreed with her that the engines were a credit to the Fat Controller. He visited again in 2011 and stated that his parents had read him stories about Sodor as a child.
When Emily asked Gordon what kind of specials he took, he mentioned the time he pulled Elizabeth II's Royal Train.
Once, while finishing off a world tour, Thomas had to collect Elizabeth II in London; but he did not realize this when she boarded the train, as he was so bowled over by all his other important looking passengers.
In 2016, the Queen invited Sir Topham and Lady Hatt to her 90th birthday celebrations in London. Sir Topham chose Thomas and Annie to take them there, and Thomas was very excited to meet the Queen again. When the Sodor party arrived at the celebrations in Westminster, the Queen thanked Sir Topham for running a fine railway.
- Gordon the Big Engine - Paint Pots and Queens
- Thomas and the Fat Controller's Engines - Golden Jubilee (mentioned)
- Thomas and his Friends - Gordon's Fire Service (mentioned) and Centenary (indirectly mentioned)
- 1987 - The Island of Sodor: Its People, History and Railways (mentioned)
- 2005 - Sodor: Reading Between the Lines (mentioned)
- Rev. W. Awdry sent the Railway Series to the royal family in 1950, to read to the young Prince Charles and Princess Anne. This was acknowledged in Thomas and his Friends.
- Elizabeth II appeared as an allusion to her coronation (2nd June) in the same year the book was published.
- Part of the fifth season episode Gordon and the Gremlin was based on an incident that happened to the Queen when David Maidment was Chief Operating Manager of the London Midland Region: Once, when he was responsible for the Royal Train, an incident caused The Queen's bath water to spill on to the ceiling of a carriage.