I finally got round to watching it and thought it was an excellent documentary. I would have liked it to have included the history of Williams and the team up until the present but that didn't detract from it.
I was always interested in how the team morphed into Walter Wolf Racing and I found this on that period and it gives quite a different account, from the one in the documentary.
http://www.grandprix.com/gpe/con-willi.html