Justin, has 20+ years of experience in providing emission inventory and projections monitoring, reporting and verification (MRV) expertise to national and international governments with significant stakeholder engagement experience. Justin is a Lead Author for the update 2019 to the 2006 IPCC Guidelines focussing on the development of a new cross cutting chapter on GHG inventory management.As a well-known UNFCCC and EU Lead Reviewer and expert in National Systems for GHG inventories, General GHG data management and industrial processes review, Justin has been at the forefront of analysis of Parties GHG inventory reporting and management systems and designing review processes. Justin has been closely involved in developing management, reporting and review systems for the UK, UNFCCC and the European Union. Justin has been instrumental in setting up a strong and sustainable MRV system bringing experience in the development of stakeholder engagement platforms for gathering and reporting data.