Bob,

That series was released on video but I don't think it's made it to DVD.
Four of them were directed by Peter Hunt and can be located at IMDB
under his name:

http://www.imdb.com/name/nm0402596/

You can search for the other titles there too.  IMDB is owned by
Amazon.com and it links to Amazon.com's listings for the videos in the
right column.  Availability varies.

Jim Zwick