Please note that while these companies are British and the product are designed and marketed in the U.K. They may actually be made abroad.
Craghoppers is a British outdoor clothing manufacturer and supplier that was founded in Batley, West Yorkshire in 1965. According to their website, the company was set up by outdoor enthusiasts who were planning an expedition to climb Mount Everest. They wanted gear which would withstand the harshest of conditions, so they researched and designed fabrics that would protect them from the extreme cold. They reached the summit of Everest and, upon their return, set up the outdoor clothing company. https://en.m.wikipedia.org/wiki/Craghoppers