I had read somewhere recently that sheep's wool is sometimes categorised as agricultural waste, which I found appalling. I think it purely refers to low grade wool that can't be used for clothing, but even so, to think of this wonderfully versatile natural material being treated as waste is really quite sad. So I browsed the internet and came up with the following information:
An illustrated History of British Wool from the Seven Sisters Sheep Centre
A brief outline of British wool production
a good article from the BBC about using lowgrade wool in compost and insulation
Of course sheep themselves appreciate their wool coats that keep them warm and cosy through the winter. The sheep in the photo are some of the Ryeland Sheep at Gorgie City Farm.