This book was mostly boring and disappointing. Aside from a few infrequent sparks of interesting revelations, we have endless Aethael-reds, -freds, -balds, -stans, and weards--all with the eye-pleasing and sometimes confusing Old English AE--which I'm unable to reproduce here--attempting to control the islands we know today as England and Scotland, and Ireland.
Necessarily one of the most fascinating passages starts out the book, with a discussion of the Sutton Hoo treasure. This extraordinary find was made in 1939: an entire ship buried in the ground containing none other than... the Sutton Hoo helmet, and other fascinating relics, thought to be the tomb of an unknown king, who was buried therein amidships.
The book attempts the bridge the gap between the Roman Empire and the dawn of modern, or medieval, England, ca. 1066. As often happens when a historian attempts to cover hundreds of years in a single volume, the narrative is vague and uninspiring. It leans heavily, necessarily, on only what is known, leaving out vast fields of details. Moreover, with this particular book, there is a lot of fill-in-the-blank history. Much of it wasn't recorded so there is scholarly conjecture mixed in with basic who-the-hell-knows. Incessant Viking raids likely destroyed some of the precious little written/recorded history there was, while archaeology helps fill in some blanks and confirm or deny some guesswork.
After reading, I'm still a little confused as to the differentiation of Britons and Anglo-Saxons, other than their geographical settlement. These peoples settled all over southern and western England some time after the collapse and withdrawal of the Roman port-city of Lundinium (Morris uses an o rather than a u). Ironically, the Romans had actually engineered a far more advanced fort and trading post than their successors would for hundreds of years. And despite the lack of documented evidence, it's fascinating to think of the place we know as London as a deserted trading post, circa 450 to 550 AD: abandoned, fallen into disrepair, overrun with weeds in the roadways, remnants of a collapsed bridge across the Thames. Subsequently attempts to restart this primitive economy were constantly harried by Viking raids.
To the north, King Hadrian's Wall separated roughly what is now England and Scotland; the Picts (Scots) would sometimes raid the villages to the south as savagely as their Scandinavian counterparts.
Eventually, and somehow, this all morphed into what is now England, post-1066, via the Battle of Hastings. They're not called "the Dark Ages" for nothing.
With a strong, continual interest, this book is worth reading. It does put into perspective the evolution of this ancient landscape from monks, pagans, Christians, villagers, and petty kings into an eventually united kingdom.