In reply to nathanlee:
The Eastern moors partnership, who now manage this area, have been removing trees form along the edges for enviromental and landscape reasons. They consulted carefully with the BMC beforehand, including a detailed site visit. Our response was that this work would generally be of huge benefit to climbers.
However, as the rep on the site visit I guess it was my fault that these two weren't singled out and left. Apologies for that, simple oversight on my part, though we did look at the whole of Curbar and Froggatt that day.
Having said that I doubt the trees would have stayed small indefinitely, and at some point might have caused problems, not because of shading but as a physical obstruction (I think Beanstalk at Cratcliffe is a good example here), so I won't be loosing too much sleep! As you point out one of the routes has already done without the tree.