You can see a really crappy
You can see a really crappy copy in 6 parts on youtube.
Lots of peeps have asked for a dvd (or included on the series box set as an extra) but since it was made befre the series, by a different channel (UK Channel 4) – in a different country, getting the rights sorted out was always going to be difficult.
Worse still, the tv film was made in the 80’s when those new-fangled video camera’s were beginning to be used. unfortunately, the quality suffered a lot especially when you compare it to film recorded tv shows of say the seventies. The technology needed to restore such a show would probably put people off producing a dvd and this is what may be holding up the release.
Lots and lotsof people are asking for it though (googled it for some info) so eventually, Channel 4 (or whoever owns the rights at the moment) may decide to do something. All you can do in the meantime is look for a torrent of it somewhere.