I recently came across the work of Brian Bates, and I am very impressed by his research and writing about Anglo-Saxon Spirituality. He was former Chairman of Psychology at the University of Sussex, (currently a Senior Visiting Research Fellow there), and his focus is the culture of the Anglo-Saxons before the forced conversion to Christianity.
But what I am especially excited about, is that he focuses especially on the Animistic time before Christianity even started to influence Anglo-Saxon culture. The worldview he describes is based on living in harmony with the spirits of the land and plants and elements, and with nature herself, and with the cycles of sun and moon and seasons. His sources are primarily manuscripts from the Middle Ages written in Old English or Latin, such as the Lacnunga, https://en.wikipedia.org/wiki/Lacnunga .
The other books I have read about the Anglo-Saxons (or about the continental Saxons) have focused on either dry, archaeological analysis (the scientific extraction of facts from the corpses of our ancestors), or are focused on reconstructionist Germanic/Scandinavian-style heathenism (trying to reconstruct a very specific time in the past, rather than reconnecting with our ancestors and then pursuing a new path with deep roots in an authentic culture of the past).
I also really like his choice to de-emphasize the differences between "Celtic" and "Germanic" cultures, which is a legacy that has been with us since Roman times. Instead he focuses on the fact that the Celtic and Germanic peoples were comprised of many tribes with many cultural differences, but overall, even though their languages were different, they had much more in common than in difference.
Brian Bates 'website is http://www.wayofwyrd.com/ , and you can sample some of his writing there.
He also has a Facebook page at https://www.facebook.com/DrBrianBates .
The only book I have managed to get a hold of so far is "The Real Middle Earth", which would not have been my first choice, as it seems to be oriented to a more contemporary audience than his other books. But I am still finding it a valuable read, and will take the time to post some quotes here for people's perusal.