The celebration welcomed a record number of members and key business partners from across the globe.
Henry Dimbleby, non-exec director of Defra leading the development of a National Food Strategy, recognised Omsco and its members as paving the way in sustainable farming and food production.
He said: “The future success of the UK food and farming industry is vital for the UK economy, and to secure this we need to build a resilient food system.
“Omsco farmers have been at the forefront of sustainable farming from an environmental perspective, through their continued efforts to protect soils, retain carbon and restore biodiversity.”
Omsco’s farm strategy focusses on animal health & welfare, reduced antibiotic use and promoting self-sufficiency in feed.
Omsco started with five farmers selling liquid milk to three large customers in 1994. Twenty-five years later Omsco have 250 members and they produce over 50% of the country’s organic milk supply.
The dairy co-operative honoured Yeo Valley with an award in recognition of their longstanding and ongoing partnership with the co-operative.
Nicholas Saphir, chairman of Omsco, added: “It’s a complex business, balancing sales across these markets and products. Going forward into the next 25 years, our future success and returns to members will be determined by finding new markets for all of our milk constituents.”