Since the Documentary "Planet Earth" from the BBC has sold more in HD DVD as opposed to BD, the BBC will remain committed to HD DVD.
http://www.tvshowsondvd.com/news/Site-News-More-Hi-Def-Decisions/8765
(it's bloody good too. Be you for HD or BD, I highly recommend it!)
I find this quite interesting BTW... the Planet Earth is a slightly different type of movie as to the normal ones out on the HD shelves. I wonder if this says anything towards the demographics of those buying HD DVD vs BD???