Michael Wood, the series presenter
England is the dominant part of the United Kingdom today
Even a cursory look at the British population will show that the dominant part of the United Kingdom is England, since more than 80% of its people reside in England. (That's according to the country's last census in 2011.) The rest of them are often lumped together into the term "Celtic peoples"; which come from the Celtic regions of Scotland, Wales, and Northern Ireland. Each of these peoples has a long history of conflict with England, and the fact that they almost always speak English today (not to mention their smaller numbers, in comparison with the English) all testify to the degree that they were conquered by England. This is, of course, a major factor in British society today, and a painful situation for many a Celt.
Did prior series from the BBC cover English history too much (and Celtic history too little)?
It may have been England's predominance over internal British affairs that caused a prior series from the year 2000 - namely, Simon Schama's "A History of Britain" - to focus mainly on England in its political history, rather than to try to cover everything else in the British Isles. A number of Celts felt somewhat neglected by the larger Simon Schama history, and so the BBC made a few other series that focused more on Celtic history - such as Fergal Keane's "The Story of Ireland," Huw Edwards' "The Story of Wales," and Neil Oliver's "A History of Scotland". While these series may have served to pacify some of the Celtic audiences for the BBC, it is ironic that the BBC eventually decided to go back to English history (at least temporarily), and make another series about England - which is, of course, Michael Wood's "Story of England," the topic of this post.
King Henry VIII, the only person to be mentioned by name in an episode title