The famous helmet from the ship burial at Sutton Hoo in England may be evidence that Anglo-Saxon warriors fought as mercenaries for the Byzantine Empire in the sixth century, a new study finds.

Emperor Justinian I and Empress Theodora were the 6th Century golden couple of the Byzantine Empire. Think Jay-Z and Beyonce - but with a lot more chariots. Script and narration by Emma Nagouse ...

Some suggested one or more of the graves could be the remains of a Byzantine king. The burial sites have been dated to approximately 575AD, when England was still part of the Eastern Roman Empire.

He writes: "My aim was to produce a clear account of the long history of the Byzantine Empire based on the latest research in all major European languages. I also wanted to highlight and explain ...