The BEST 5.10a at Mentmore, this route should get climbed far more often than it does. It follows a shallow, incipient crack system up a shallow scoop in the cliff face, with fun climbing, good rock, and so on. Go do it! Clipping the 3rd bolt can feel quite hard, though, so this is not a good choice as a first 5.10 lead.
The second boltline left of the obvious, jumbly "Why Crack". Look for a shallow "scoop" in the cliff band. Walk or lower off; don't rap, ropes get stuck easily.