BT are in the process of launching their IPTV service, BT Vision- and with that comes a download store, which seems to be carrying a handful of anime shows.
Searching for 'anime' is a little... off, but you can just about pick out that they're running:
and IkkiTousen, episodes of which have popped up in the top ten TV downloads.
There only seems to be about five episodes of each, and they're DRMmed up to the eyeballs and they're charging Â£3.50 a throw (albeit download-to-keep and with some shows they mail you a physical DVD, too) so it's probably more of a publicity thing, getting you to buy the proper DVDs, than a standalone product.
taken from the uk-anime.net forums