Filming is officially underway down at the Coal Exchange in Cardiff, with the base set up and some of the cast and crew seen coming and going to and from the area.
Michael Gambon has been seen coming in and out of the venue, though as far as we know he is out of costume and it is possible he is just making a fleeting visit to the set. There has been no signs of Matt, Karen or Arthur as of yet.
If anyone is in the area and wants to check things out, the base is on Pierhead Street, and filming is taken place around the Coal Exchange and square at CF10 5EB. We should have some pictures in soon for you too.
EDIT: Matt and Karen have now been seen,but still no sign of Arthur as yet