Re: So will UK viewers notice more of a difference with the Blurays...
The Blu-ray episodes will also probably seem slower to us as the conversion from NTSC 60fps to PAL 50fps sped the episodes up by 4.2%. The video quality of the DVDs looks just as soft to me as the original broadcasts (repeated most recently on Virgin 1, IIRC). I haven't seen the NTSC versions for comparison. I expect a notable improvement.
"After a time, you may find that having is not so pleasing a thing, after all, as wanting. It is not logical, but it is often true." -- Spock -- Flip flap!