Founded by Alexander Johnston in 1797 on the banks of the River Lossie, the mill was vertically integrated by 1811. His son James introduced Australian Merino, vicuña and cashmere to the business between 1847 and 1851, and the house wove its first Estate Tweed in 1845 — later weaving the first Super Balmoral for Queen Victoria and Prince Albert in 1853.
Sold to Edward Stroud Harrison in 1920 and now co-chaired by his great-grandchildren Neil and Jenny Urquhart, the family-owned house holds three royal warrants and supplies the luxury industry, including Hermès, Chanel, Louis Vuitton, Ralph Lauren and Burberry. A second knitting mill in Hawick was added in 1980, and a New Bond Street flagship opened in 2015.