That's a cue for something on the Anglo-Saxons! The archaeologists are slowly accepting the fact that we were wrong in the old assumptions that the Saxons `invaded' us. This is a shortened version of what was in last month's Current Archaeology magazine. (You'll particularly enjoy the last graphic, of the North Sea, and its caption.)
`Time to axe the Anglo-Saxons? Rethinking the ‘migration period’ LINK