Ug, just fell down at stage two. I think it was the interview rather than the computer tests. Going to phone HR tomorrow to see if they'll give me any feedback.
... dough
If anything I feel a little more confident now for when I reapply.
PS: If anyone has any issues with where the stage 2 is held or how to get there once you are nearby then feel free to contact me as I work just up the road from the place.