This Coventry firm sells cleaning liquids, powders and tablets in more than 80 countries, and has seen demand soar during the pandemic. Founded in 1963, it also sells specialist farming and veterinary healthcare products through a network of distribution partners, including Merck in North America. Demand from China’s agricultural sector for products to combat African swine fever helped boost international sales to £11.6 million in 2019 under chief executive Steve Quinlan, 59.