I finally got my hands on "Our Wild Farming Life" by Lynn Cassells and Sandra Baer ( I asked the library to buy it and they did!). Though I may just have to put it on my birthday list... as it looks like one of those books you go back to an re-read when it seems you are stuck with your own smallholding...
Just a brilliant, uplifting and though-provoking book, and I am only half-way through... there is also a youtube video (filmed by Huw Richards), and I am tempted to schedule our next holiday weekend away to coincide with one of their farm tours...
I haven't seen the BBC series (as don't have a TV and refuse to pay a licence, so no i-player either).