Came across this post by Jo Homan on the Transition Finsbury Park
"This month we will start clearing buddleia at Harringey (sic) Green Lanes station for our first community growing project with London Overground (it is their first, too!). We plan to grow three apple trees, some grape vine and several red- and blackcurrant bushes, with a lavender and rosemary border on the South-facing slope to one side of the station. We think this is an excellent opportunity to share our love of food growing with the community and commuters. As well as being educational this project will highlight the fact that food can be grown in seemingly unlikely places! More
That sounds lovely!