I have a very clear memory of this title featuring the [region-free] tag in the past, but for whatever reason Amazon UK removed it, and added B/2 in the region description. The Season 1-2 pack and the Season 1-3 pack are marked as [region-free].
I own Season 1 which used to have the [region-free] tag but was similarly later edited to have the tag removed. I can confirm that Season 1 is indeed region-free, or at the very least it works on a region A player.
Additionally, to the best of my knowledge Warner Bros typically releases region-free Blu-ray content.
So then, my question is, can anyone please confirm whether the Season 2 pack is in fact region-free? Does the back cover or any of the disc feature the dreaded B logo? Any info would be much appreciated!