"The Anglo-Saxons - they divided our land and heralded the arrival of the Dark Ages. But were they really just barbarians?"
I am not certain what "our" the blurb is referring to. Not to mention the BBC's barbarophobia. Much more helpful are the notes appended to the clip itself.
The ethnic religion of the Anglo-Saxons is a form of Germanic religion closely related to the beliefs of the Continental Germanic and North Germanic peoples. As with most religions designated as being pagan by later Christian writers, it is a polytheistic belief system, focused around the worship of deities known as the ése (singular ós). The most prominent of these deities is Woden, although other prominent Gods include Thunor and Tiw. Perhaps the most prominent female deity is Fríge. Thunor is a friend of the common man, in contrast to Woden who is primarily associated with royalty.
All this and a remarkable community project in a shopping centre in Sittingbourne besides. The spirit of Alfred is pleased.