Thanks gents.
It's a compartment of larch mixed with Beech, which I have a hand in managing. The larch will most likely contract Phytopthora ramorum disease (the word phytopthora means destroyer of plants) and the Beech has been ruined by grey squirrels. Every few years, I go there and scratch my head a bit, wondering how to deal with it. I then walk away with no answers. I defend myself by remembering a college lecture in which I was told that a decision not to manage is a valid management decision. Forestry is a long game and I'll be back in a year or so!