If it's got anything to do with horses, expect Clare Balding to be fronting it. England's answer to Tracy Piggot narrates this special documentary which takes us through Queen Elizabeth's 65-year career as one of England's leading horse breeders, and documents the monarch's enduring love for all things equine. The Princess Royal (that's Anne to you and I) and her daughter Zara Phillips talk about the impact her passion has had on their lives, and Clare finds out a bit more about Liz's work to preserve the native pony breeds of Britain. Sounds jolly good.