I have seen his Wet Fly fishing video (he fishes the Wharfe). There are 30 minutes or so of on-stream instruction and about an hour of tying. I took a look at the trailer for it for this post, and frankly, the trailer spills most of the beans unless you need the tying. He is too negative for my taste as regards the across and down swing--sometimes I've caught on the swing when the dead drift upstream did not, but to each his own.
In the tying, he gives great historical info you probably wouldn't get elsewhere, and fortunately he is tying classic north country spiders which are fast, easy and cheap to tie.
Before he and his production company cracked down, there were some extended extracts of his videos on Youtube. His patterns struck me as being way too complicated. Before Mcphail that was ok, because you could nevertheless pick up some good techniques and ideas and the production quality was outstanding. After Mcphail, why bother?
Adding up what I remember of the Wet Fly fishing dvd, the old Youtube extracts, and the current assortment of trailers, Edwards has something unique going going for him: UK streams are places you dream about fishing someday, or at least I do. He takes you to those streams and gives lots of interesting background. He is engaging to watch. Production quality is stellar. I even like the music which evokes the pastoral Yorkshire dales very well.
Seems like good entertainment. Keep in mind that is coming from someone who thinks Mcphail tying videos are better entertainment than most of what you can find on TV.