In reply to Fiend: Serpents Tail is the line of bolts up the shattered corner finishing up a short arete above a ledge(see my notes) and is to the right of The Quarryman, Hound-dog etc. Usain Bolt follows the next line of bolts up a corner with 3 stepped corners above (same loweroff as S.T.). Grand Union is the lefthand line on the big slab and Charcoal Burner is left again up an arete and slab on the back wall (wear a helmet!). There are also some other routes left again at the bottom of the scree, the best is Helter Skelter, a really good and long diagnal R - L passing twin bolts half way if you want to finish early (again put your lid on!).
Michelangelo, Middle Earth etc are great too if you havent done those.
Hopefully Collin and his team will have a topo availble soon.