Forgotten Kingdom is folk singer-songwriter Jim Causley's fifth studio album excluding his work with The Devil's Interval and Mawkin:Causley. Forgotten Kingdom is Causley's first album of entirely self-written material although does include references to traditional song throughout. It was intended to celebrate ten years since the release of Causley's debut album Fruits of the Earth in 2005 but the release was delayed due to poor health on the part of original producer Phil Beer. Production of the album was then completed by Show of Hands regular producer Mark Tucker at The Green Room studios in East Devon.