The Applewood Permaculture Centre is nestled in the hills of Herefordshire. I went there for a short course last week: "Learning the language of systems and patterns". Applewood is aptly named because there is indeed a large orchard (where I camped) with various local varieties. Some delicious apples and apple juice were a welcome bonus to doing the course.
 One of the tutors Looby runs the centre with her partner Chris (it's also their home). The other tutor was Aranya; I did my PDC (Permaculture Design Certificate) with Aranya back in 2015 and a couple of other short courses since then.
 I will have to write a longer entry on permaculture because some very interesting ideas and practices have developed out of it from the 70s onward. Suffice to say Aranya is a brilliant communicator of some weighty concepts which sound like (and in fact are) common sense when he describes them so clearly. He is a masterful exponent of the whiteboard which he wipes down afterwards with an old sock!
 His book "Permaculture Design" is a great source book for permaculture in general and the design process in particular. He will be publishing his second book next year and it will be about systems and patterns.