Big thanks to Phil Atwell for the e-mail to say the 3 & 4 Star award Podcast is actually the Greenland Podcast - whoops!
I know for sure it was the 3 & 4 Star Award podcast, because it downloaded into my iTunes. Something must have gone screwy when I added the 5 Star podcast. This is slightly awkward to fix, and I can't change it until 1st Feb when the new Podcast(s) appear.
However, 3 & 4 star podcast (and many more!) can be found in the Podcast Library. The link there works fine. If anyone else notices glitches, I'm always keen to hear.