2022–2024ChairForestry and Climate Change Partnership
2016–2023Board MemberConservation Advisory Committee, Woodland Trust
2013–2023TrusteeFund4Trees
2010–2013ChairmanWalnut Group, Future Trees Trust
2007–2011Board memberSociety for the Environment
2007–2011Council memberInstitute of Chartered Foresters
2007–2008Technical Co-ordinatorInstitute of Chartered Foresters, national conference 2008
2006–2012AppointeeForestry Commission Regional Advisory Committee (South East)
2006–2012ExaminerInstitute of Chartered Foresters
2006–2012EditorForest Science Database international editorial board, CABI
2005–2009TrusteeWoodland Heritage
2002–2005Research co-ordinatorOak research group, BIHIP
2001–2004SecretaryBritish & Irish Hardwoods Improvement Programme (BIHIP)
1996–2005SecretaryWalnut research group, BIHIP