We provide comprehensive long-term Biodiversity Net Gain (BNG) monitoring services to ensure that the intended ecological outcomes are achieved and maintained throughout a project’s lifespan. Over the 30-year monitoring period, our ecologists carry out regular habitat condition surveys, reporting, and data reviews to track progress against Biodiversity Gain Plans and statutory requirements. Working in close collaboration with land managers and local authorities, we ensure habitats are not only established but continue to thrive — supporting both compliance and genuine, measurable biodiversity recovery.
Long-Term Ecological Monitoring
BNG projects require robust, evidence-based monitoring to demonstrate that biodiversity gains are being delivered over time. Our experienced ecologists conduct periodic habitat condition assessments in line with the Defra Biodiversity Metric, ensuring consistency with the baseline and target conditions identified in the original BNG plan. Monitoring intervals are agreed in advance and designed to provide clear, traceable data to support regulatory reporting and adaptive management decisions.
We use a combination of field surveys, remote data capture, and GIS mapping to record habitat changes and assess progress toward target conditions. This long-term dataset enables our clients to demonstrate transparency, compliance, and continued ecological improvement.
Adaptive Management and Ongoing Stewardship
Habitat creation and enhancement are dynamic processes that evolve over time. Maydencroft adopts an adaptive management approach, using monitoring results to guide practical interventions and ensure that habitats develop as intended. Where challenges arise — for example, due to invasive species, climatic factors, or unexpected habitat responses — our ecologists work with land managers to implement targeted corrective actions.
Through this proactive, responsive approach, we help maintain habitats in favourable condition and ensure they continue to deliver the biodiversity units committed to within the HMMP.
Reporting and Compliance
We provide clear, detailed monitoring reports suitable for submission to planning authorities or Responsible Bodies. These reports summarise habitat condition data, compare progress against Biodiversity Gain Plan targets, and outline any management recommendations required to stay on track. Our documentation is structured to align with HMMPs where applicable, ensuring full compliance with planning conditions and any other legal obligations.
Delivering Long-Term Success
Our goal is to make BNG monitoring as seamless and effective as possible — providing clients with the assurance that their biodiversity commitments are being met while delivering tangible, lasting benefits for nature. Through expert ecological oversight, adaptive management, and transparent reporting, Maydencroft ensures every BNG project remains compliant, credible, and capable of sustaining biodiversity gains well into the future.
"The tree teams have been very good at contacting us with issues and queries on site and as a team we appreciate the thought and care taken when undertaking work in the Borough."
O. Waring
Welwyn Hatfield Borough Council
"Positive: Professionalism, Punctuality, Quality, Responsiveness, Value. I have used Maydencroft twice for landscaping work. Both times they were fast, efficient and worked with a high attention to detail and quality."
Private client
“The workmanship has always been to a high standard but every time I come into contact with anyone in your workforce, I find them completely informative, helpful, and accommodating (even when I change things!)"
Private client
"A seamless service, from initial survey to clear and practical management plans. From senior management level to operative, I have found their staff to be professional, hard-working, courteous and well-disciplined."
Affinity Water
“A big thank you to Alison and the team for a perfect document from which to work.”
Private client
"Maydencroft understood exactly what we wanted to achieve from our very first meeting, and helped us come up with a suitable plan that Natural England could agree to very quickly and with very little fuss."
J. Merrill
Asset Surveyor at Affinity Water