Lincolnshire Herbs won the Morrisons Award for Outstanding Business.
Managing director Patrick Bastow described the award as "a recognition of our innovation in production and sustainability".
Barfoots of Botley took the Tetra Pak Environmental Sustainability Award in acknowledgement of the West Sussex vegetable grower's investment in anaerobic digestion. Its £3.5m unit, which has been operating since May 2010, turns 25,000 tonnes of green waste a year into heat and electricity, much of which is sold on.
The development also took the energy and environment gong in the Best Factory Awards last month.
Commercial director Jon Barfoot said: "It is a real honour to be recognised by our peers. We will continue to push our environment innovation and aim to showcase the business as a leading light within green energy."