submitted by Catherine Bertrand who wrote this about it:
This is one of the greenhouses from Bedford Walled Garden, falling to pieces, but also there's some beauty in the Pheasantberry.... only Pheasantberry is a non-native species. It crowds out the plants that should be there, the vegetables, the cut flowers, ever the native 'weeds' (wildflowers!) and it's good for nothing as our native invertebates and beasties don't feed on it :(