In reply to pec:
Photon was climbed since the 2013 guide (2017) and its details are in the climbing area of the FRCC website and on p40 of the free-to-download 2018 FRCC New Routes Supplement that updates most of the Lakes Definitive Guides (not the recently published, Sport & Slate, Duddon which will be published early next year, or Dow & Eskdale). The supplement download link is in the climbing area. Checkout the FRCC website climbing area which details new routes and includes feedback about current routes and guides. It allows users to post new route descriptions and provide feedback on guides, crags and routes.
I haven't been to look at the damage to Helm Crag, but from the photo of the fall on the FRCC website and the photodiagram in the guide it seems pretty clear that anything starting up Bently will be an 'exciting adventure' at the moment.