From its base in the Scottish Highlands, this firm sells hand-reared salmon to restaurants, retailers and distributors in Asia, the Middle East, Europe and the US. Started in 1977, it was bought by four of its original staff in 2006, including Gilpin Bradley, 54, who is managing director. In place of chemicals it uses locally-caught wrasse, which eat parasitic sea lice, to keep its fish clean and healthy. International sales hit £12.5m in 2017, representing almost three-quarters of total sales.