The Horse Trust (formerly The Home of Rest for Horses until September 2006) is an equine charity in the United Kingdom, based at Speen near Princes Risborough in Buckinghamshire. It was founded in 1886 and is the oldest equine charity in the world. It was set up to help the working horses in London. Upon the decline of the working horse in the 1960s it widened its remit to include education and research, becoming the largest provider of equine welfare grants in the United Kingdom.