Gosh, that was a surprise! Me (in a former life) belaying Ian Parsons on the first ascent of Shelf Life...
The arête to the right is a fantastic E4 of John Fleming's, called The Recidivist. I seem to remember John and Chris Jackson telling me about that line, in what felt like an open invitation. They abbed down to set up the belay (so I thought), but by the time me and Ian got down John was already halfway up the pitch! I think Shelf Life was our consolation prize. The very overhanging arête to the right of Recidivist is the start of Gael Force, a brilliant E6 which was the hardest line we did that memorable trip.
The corners and flakes to the left of Shelf Life are a tremendous 3 pitch E5 called The Longest Day...
Great memories and a fantastic cliff. Let me know if you want any more info Dave, and good luck with your guidebook.
Neil