At the moment I have no idea when the show will be aired, but will let you know when I have more idea. At a guess, I would expect it to be shown in the Autumn sometime.
I quite like the idea of sneaking around in the shadows with a set of throwing knives, but I imagine that might compromise the rules!
Ah, well, I suppose we will just have to win the old fashioned way.
Yes, WS, it will be filmed behind closed doors. A shame, but I imagine the curators of the museum would have a fit if Channel 4 had onlookers running amok amidst the priceless artefacts in the British Museum without a full complement of staff to supervise them.