Sunken gardens just by the side of what was the perimeter of the vast, old Millbank Penitentiary - think the actual perimeter ditch is the bit to the left of these where Chelsea College seem to have put up greenhouses.
@happypat ha ha - the village bit is charming and villagey - the rest of it is a bit of a dump! (Well our bit near the park is not too bad!) Must try and take a look.