To celebrate 65 years since Her Majesty's coronation, Countryfile, also celebrating its 30th anniversary, has been given unprecedented access to the Queen's Windsor estate. Matt Baker is at Windsor Great Park finding out about the Queen's countryside retreat and how it was as a young princess that Her Majesty first fell in love with the park. Adam Henson explores the farming history at Windsor as well as looking at the Queen's current farming methods. She has a number of breeds of livestock on the farm. Anita Rani looks at the Queen's love of horses and her passion for native British breeds. Anita meets a farmer who breeds Cleveland Bays, a breed rescued from the brink of extinction by HM the Queen. Sean Fletcher is at the Royal Welsh Show. It's a country show Princess Elizabeth first visited in 1947. John Craven meets the man in charge of a huge new planting scheme across the Great Park instigated by the Queen and the Duke of Edinburgh.