Dorian is an Advisor on the Resilience and International Development Programme at the Environmental Change Institute.

His research covers themes related to climate finance, nature-based solutions and development finance with a particular focus on scaling investment into nature. His interests primarily lie in leveraging private sector capital to advance environmentally sustainable and inclusive projects across the emerging and developing countries.

He brings experience in climate finance and natural capital investing from a career in the asset management sector where he has worked at multiple global specialist investors focused on alternative asset classes. He is currently an Investment Manager at Gresham House within the Forestry Division where he covers acquisition and asset management of commercial and carbon forestry assets both in the UK and Internationally, as well as working more broadly on developing and implementing the firm’s natural capital strategy. 

Prior to Gresham House, Dorian was at Sail Ventures, an alternatives investment firm base in the Netherlands, where he was part of the founding team of a global blended finance climate fund, the &Green Fund, focused on sustainable agriculture and forestry which scaled to over US$ 400 million. The Fund was anchored by Norway’s International Climate and Forest Initiative (“NICFI”) and raised capital from multi- and bilateral actors, development finance institutions and private sector investors. As a senior investment specialist in a lean team, Dorian was primarily focused on growing Sail’s portfolio and was responsible for structuring investments with embedded ESG features, catering to both early-stage pre-profit enterprises and more established multibillion dollar listed companies globally. During his tenure at Sail, the firm received the Asset Manager of the Year award from Environmental Finance on two occasions.

Dorian holds a first-class Bachelor of Business Science in Finance and Accounting and Postgraduate Diploma in Accounting (Hons) from the University of Cape Town as well as a first-class MSc in Climate Change, Management, and Finance from Imperial College London. He is a CFA Charterholder.


Van Raalte, D. and Ranger, N. (2023). Financing Nature-Based Solutions for Adaptation at 
Scale: Learning from Specialised Investment Managers and Nature Funds
. Global Center 
on Adaptation and Environmental Change Institute, University of Oxford