Good Job.
I've tried using clay and I know what a pain in the a$$ it is to animate (haven't submitted any [i]yet[/i] but I wil at some point, so good job there, british accent was fine, and that's a patriotic brit telling you that.
Keep at it, you know how you animate, that clearly shows, a little hint, if you make mouths on thumb tacks, you can easily interchange them to lipsync, but it's a little bit guess work, a little bit speaking in time to the anim.