Kos, Charles R.
Charles R. Kos is an Australian ancient mysteries researcher whose website(a) deals with a range of subjects – Pyramids, Stonehenge, Anunnaki, Sphinx etc., etc.
He has also produced a number of videos in support of his theories.
Inevitably, he included Atlantis in his output(b), which he claims was part of what we now know as Britain, but was specifically a sunken part of Britain, more generally called Doggerland today.
Much of what he has produced is highly speculative, which I am prepared to attribute to over enthusias