I’ve attached a photo below - it may be hard to see though - but if anyone can suggest my next course of action it would be appreciated? I was thinking I need to hack off more plaster above first so I can get a proper idea of what’s what? There’s a thin strip of metal spanning the gap at the top (not visible in the photo) but it doesn’t seem to be doing much as it’s flimsy so surely can’t be a proper support?
Thanks