OMEX Agriculture makes and delivers liquid fertilisers and crop nutrition products for UK farmers and growers. The company says it was established in 1976 at Bardney Airfield in Lincolnshire, was originally named OMNIA and became OMEX Agriculture in 1985, and belongs to a group of companies operating in several countries.

Its UK range includes Nitroflo liquid nitrogen plus sulphur, Multiflo liquid NPK plus sulphur, the Fortiflo plant health and crop nutrition range, and fertiliser inhibitors. It offers soil sampling and analysis, which it says is free to customers who then buy its liquid fertiliser, with samples analysed at PAAG-member laboratories, and SAP analysis of plant nutrient status, which it launched in 1992. Its history page also lists an Ipswich import site bought in 2011 and a Dundee site opened in 2018.