The Devil's Crown is a BBC television series which dramatised the reigns of three medieval Kings of England: Henry II and his sons Richard I and John.
A full set of tape copies exist at the British Film Institute, where they can be viewed on request.
It has never been released on DVD, although a French dubbed version, called "La couronne du Diable", is available as a paid download.
He may have been King of England, but the bulk of the Angevin Empire was in France, and it was this that Henry regarded as the Jewel in his Crown, maintained through a series of political marriages and complex allegiances.
Henry pays homage to Louis VII, King of the Franks, for these lands, but it is clear that Henry is the shrewder and more ambitious of the two kings, having married Louis' ex-wife Eleanor of Aquitaine.