When the old Dulwich Hospital was there, there was a community herb garden at the front which was built, planted and maintained by local businesses and residents.
If memory serves, they were told that this - or some form of it - would be kept when the new buildings were built.
It's a real shame that (to the best of my knowledge) this hasn't happened.
We (The Goose Is Out!) ran a gig at DHFC to raise money for it, and all the musicians (including Wizz Jones) gave their time for free.
A local business (I can't remember which, sorry) built all the raised beds for free, and Monica from Health Matters in Lordship Lane played a major part in getting the garden off the ground (no pun intended).