The Chartered Institute of Ecology and Environmental Management is the leading professional membership body representing and supporting ecologists and environmental managers in the UK, Ireland and abroad.
All the latest on the Planning and Infrastructure Bill as well as CIEEM's activities.
CIEEM cautiously welcomes the Government’s confirmation – announced by Housing Minister Matthew Pennycook MP in Parliament today – that it will introduce an area-based exemption from mandatory Biodiversity Net Gain (BNG) for smaller sites up to 0.2 hectares, rather than the previously rumoured 0.5 hectare threshold.
CIEEM has today engaged with Defra civil servants on forthcoming updates to the Habitats Regulations Assessment (HRA) guidance, contributing to a workshop exploring how the current guidance is working in practice and where improvements are needed.
CIEEM has today (11 December 2025) written to Government ministers across HM Treasury, MHCLG and Defra to express our concerns about the direction of travel on Biodiversity Net Gain (BNG) site threshold exemptions. In our letters, we strongly encourage Ministers to adopt a workable, proportionate and pragmatic approach that maintains the integrity of BNG while reducing unnecessary burdens on the smallest developers.
All the latest on Biodiversity Net Gain in England and the other approaches to biodiversity enhancement across the devolved nations and Ireland.
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