Ecoworks manage two sites (27 gardens in total) on Hungerhill Gardens in St. Ann’s, Nottingham, one site on Brewsters Road in St. Anns, and a 13-acre permaculture site on the urban fringe of Nottingham.

Although it was hard to find out to begin with, Ecoworks is a registered charity and was established in 1992. (localgiving.com link)
They run community gardens, the Harvest cafe, and assorted community events.
Dribble all over some of the pictures of their catering / cafe here, or follow them on Facebook over here.
And finally, a great short video:
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