A long time ago, I read The Offshore Islanders by Paul Johnson, and I must say the opening chapters, the part about ancient history up to the Norman invasion, were very confusing to me at first. He would say things like: the English did this and the British did that, without really defining his terms, and it wasn't even clear to me at first that he was drawing a distinction between two groups. Finally I figured out he was using "English" to mean "Anglo-Saxons" and "British" to mean "Celts." This seems to be a rather idiosyncratic usage. Am I right?