If winter is as shown in this documentary across most of the southern UK, it is no wonder the pilgrims were shocked by New England winters (only about 20 years later than the time period in the show). I can't imagine starting a winter wood supply in December...
I've owned this video on DVD since 2005 and it has always been one of my favourite series.
As I understand it Lion TV, who made the series, went to great pains to maintain the illusion that the team lived on site but the BBC were keen it was stated that the team had not lived on site due to HSE legislation about employees.
The real father of this project is Stuart Peachy who has been restoring the farm and landscape for decades. He has a book on the subject http://www.amazon.co.uk/372/dp/1905223137 the book is very much about the decades of work his team have done and not the TV series. Peachy is coy in the book about the TV series, stating "For contractual reasons I cannot reveal what actually occurred during the filming." but he alludes to annoyance and damage to the project.
The other series, also enjoyable, of course also piggybacked on the work of others - and represent an entertaining and informative slice through bigger projects.
Common Weeds And Wild Edibles Of The World (HD video)