Hello everyone,
I have been to the castle again even thought it was closed today, to see what kind of chance I can get. Unfortunately they shot in the castle so I could do nothing but wait outside. But still I have seen Colin, Katie, Angel (those three came by the same car, Colin sat besides the driver and girls were on the back), Richard and Anthony (those two in another car). Bredley was already inside when I arrived and I didn't see him out until I left (2pm). But I still have taken few pictures (very little chance) including one of Katie.
However, I have got a good news from the crew I was talking with!! The group will back Pierrefonds on the 3rd of June and will stay there for around 4 weeks. I think we can take his words and keep checking the castle's website to confirm.
Another good news is they gonna shoot scenes on the lawn tomorrow afternoon, which means people can watch the whole process again. There may be a dialogue among Arthur, Merlin and probably Gaius while the background is knights in training. Good to know that and I will be there for sure and will post pictures as soon as I can :)