Someone on eBay has gotten together the complete series along with a bunch of extras (including both the UK and US versions of the original story), and has made a large number of 4DVD sets. I ordered one awhile ago, and I can vouch for its quality. Not perfect, but it's more than adequate until an official release.
Here is a link to the current auction, but whenever they are sold out the seller starts a new one. Just search for Max Headroom and you should find it!