As the leading manufacturer of biochar in the UK - our high-tech, environmentally friendly manufacturing sites efficiently deliver high-quality biochar at scale to meet the nation's growing demand.

Our expertise in biomass sourcing, state-of-the-art machinery, and rigorous lab testing ensures all of biochar products meet the rigorously high quality standards our customers expect.

As a trusted UK biochar manufacturer, our customers can rely on us to ensure on-time delivery, flexible transportation solutions, and a dependable service from enquiry through to delivery and ongoing advice.

Onnu's UK manufacturing sites consistently produce high-quality pure biochar products and biochar compost mixes for retail and commercial applications across a range of different sectors.