I've just noticed that new applications have been closed.
"We are currently closed to new applications. We review our requirements on a regular basis, so please register your details below and you’ll be the first to know when we are recruiting for Trainee Air Traffic Controllers."
Judging by this thread, they must have been inundated. Very pleased I applied when I did. Hopefully my Stage 2 comes back positive. A little worried I'm going to be a part of the "overflow" by applying so late!