I really need to get around to the last...4 (?!) seasons of this show. My local PBS aired the show's original run, but I don't think they ever got the newer stuff.
Back to Earth which is series 9, was more sitcom than comedy so not really that good, series 10 through to 12 is back to how it should be and large chunks of it, filmed in front of a live studio audience and less of a over arcing plot for the series and back to more stand alone eps, preforming in front of live audience adds a extra layer of challange that only actors who work in or have worked in Theate experience, because its not just the film crew is on set but regluar everyday people. There is no Holly or Kochanski in the newer series, just the four Bozos, Lister, Rimmer, Kryten 2X4B-523P and last but not least, the most stylish of them all, the CAT! You should be able to find the series on DVD or Amazon, not sure about Netflix, I think its on there, but then I got the series on DVD, you can easily binge the series within a day as they are only about six eps for a series.