Tom Rayner is Founder and CEO of Sillion, a consultancy specialising in strategic communications for companies involved in the renewables, energy, and sustainability sectors, and corporate ESG advice across all industries.


Serving companies who are beginning their ESG journey as well as those in impactful industries, Sillion advises on the structure, implementation, and communication of good ideas and practices. In addition to its technical work in sustainability, Sillion helps its clients to then accrue strategic advantage from ESG – with investors, customers, and employees.


Tom has 15 years’ experience in strategic communications, advising clients across the UK, US, Europe, and Asia, including corporates, NGOs, and governments. Focusing primarily on the Energy, Renewables, Infrastructure, and Transport sectors, Tom has worked at boardroom level on issues ranging from IPOs and crisis communications to M&A and industrial engagement. He holds a degree in Archaeology & Anthropology from the University of Oxford.

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