Looks like it's shot from in the Panorama grandstand if I'm not mistaken.
You can shoot through the fence at ground level. If you follow the fence back from Dunlop towards the bridge - where it ends there are a few holes in the fence and you'll usually see a few amateur snappers sticking their lenses through. Which will get you this. Or you can shoot straight through the fence and get similar as long as you can press your lens against it.
153 by
Richard Simpson, on Flickr