Ah I wouldn't use any of his creations as a template to make them yourself, most of the stuff, as you've said, are once offs and purely indicative.
But again, the lack of pontification is great, especially considering he's an organic farmer.
I've seen a few programmes he's done on the BBC. There was one that he did on Farming but on a seriously epic scale. Wasn't preachy about the way it was being done, moreso a way to show the methods being used. And he made the point that if people want cheap food, out of season, that these types of methods had to be implemented.
Was interesting to see that getting you're green beans, mangetout or baby sweetcorn from Nigeria has a smaller carbon footprint than getting flowers from Holland.