Paul Brannen extols the benefits of commercial forestry, while Dr Andrew Cameron warns of Britain ‘offshoring’ its timbers supplies, and Jane Gifford calls on the Scottish government to review its forestry policy Last week you published a well-balanced piece on the success story that is Kielder Forest ( How England’s largest forest went from commodity to conservation haven, 2 June ). At the heart of this achievement has been learning from the planting mistakes of the 1970s. Today Kielder is succ