UK Blu-Rays are Region B, Hal, while those in North America, Japan and South Korea are Region A. Though many UK BDs are region free -- just got THE ITALIAN JOB 40th Anniversary disc, which plays just fine on my PS3.

Am very interested in this PRISONER set...will wait to hear feedback on video quality, extras etc. So far, most UK Blu-Rays I've seen look very, very nice, so I'm optimistic.