T25 exemption allows you to treat food and other biodegradable waste by anaerobic digestion to produce digestate for use as fertiliser, and burn the resulting biogas.
Source
https://www.gov.uk/guidance/waste-exemption-t25-anaerobic-digestion-at-premises-not-used-for-agriculture-and-burning-resulting-biogasCanonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.