Both.For britain or in general?
And tbis is very true. Could he name himself an emperor?Well, he's specifically maintaining certain posts but communicating them with each other. If that makes sense. Appears to me like a single Government in the making, though a single Parliament is not yet evident.
Unless TTL Albion has been extended in usage for the Isles as a whole, however much King of the British Isles appeals to me as a title.