2 leaks in one week? BBC, you best get on your goddamn game.
If you really want to see them, I will PM you a link if you ask nicely. Or, you can do a little searching around.
As far as I know, only the first 2 episodes have been leaked. They're in black and white, most of the CGI I saw was unfinished, it's devoid of most of the sound effects, and there's a lot of text cluttering the screen, but it's definitely watchable.