Herdwick sheep were probably introduced by Norse settlers during the Viking invasions (10th-11th c.). The husbandry of the sheep has been a large factor in shaping the culture & terrain of the Lake District. Beatrix Potter was involved with breeding Herdwicks & bequeathed 15 farms to the National Trust. Per her instructions all continue to graze Herdwick flocks.
The Scottish Blackface is the most common breed of domestic sheep in the United Kingdom. This tough and adaptable breed is often found in the more exposed locations, such as the Scottish Highlands or roaming on the moors of Dartmoor. It is also known as Blackfaced Highland, Kerry, Linton, Scottish Mountain, Scottish Highland, Scotch Blackface and Scotch Horn.[Wikipedia] - Scotland