The following are a mixture of government departments, charities, member organisations and trade bodies. All offer good advice on different aspects of woodland management, conservation and sustainability.

• Forestry Commission
• Forestry England
• Forest Research
• Forestry and Land Scotland
• Scottish Forestry
• Natural Resources Wales
• Ancient Tree Forum
• Arb Association
• Coed Cymru
• Continuous Cover Forestry Group
• CONFOR
• Grown in Britain
• National Coppice Federation (NCFed)
• National Hedgelaying Society
• Royal Forestry Society
• Sylva Foundation
• Small Woods Association
• The Tree Council
• Wildlife Trusts
• Woodland Heritage
• Woodland Trust