Definitely a worthy route though perhaps a bit overgrown at times. As with many Rumney trad routes, it suffers from under use.  If you are a sporty climber looking for trad practice it's a good option.   

Locate the obvious crack in the corner of the alcove. Jam and pull up a steeper section making use of the ledges where you can, then up through the lower angle top half. You used to have to belay from a pine tree, but now you can share the anchor of Things I Never Learned. 

In the corner of the alcove area of Jimmy Cliff. To the right of things as they are etc and to the left of the moderates on the right wall. It's a pretty obvious crack.

Regular rack