From the Knit Rowan website:
As an annually renewable natural resource, the Rowan Purelife British Sheep Breeds wool is shorn and blended from classic British sheep breeds: Bluefaced Leicester, Black Welsh, Jacob, Suffolk, Shetland, Dark Grey Welsh and Masham. Spun into beautiful un-dyed shades and with its natural lanolin maintained, our British Sheep Breeds Chunky is perfect for rugged outerwear designs.

Details:
Article Number: 9802110
Fibre Content: British Wool: 100%
Season: Autumn Winter
Yarn Ball Weight: 100g
Yarn Meterage/Yardage: 110/120
Tension/Gauge Stitches: 13
Tension/Gauge Rows: 18

Recommended Knitting Needles:
Knitting Needle (UK): 2
Knitting Needle (US): 10½-11
Knitting Needle, MM: 7