12.32pm

It's a lovely bright day today, and even though we're totally exposed to the elements up here and the sky has begun to cloud over, it still seems unlikely we're in any danger of rain stopping play.

In fact, it's starting to look like this might not be the caffeine crazed, mad-cap dash to the finish I was expecting. Which is a tribute to a crew who are obviously well prepared and know what they're doing, I suppose.

Still, we're not into filming the stunt shots yet, and there's an extremely important shot of a bird in flight which needs to be snatched at some point. So anything could happen.