Communications counsel for the energy and environmental transitions
We advise transition-facing leadership teams on communications, narrative, and stakeholder positioning - helping you communicate credibly when scrutiny is high, politics are volatile, and pragmatism is on the rise.
Trusted by leadership teams at
Across a range of industries and challenges, we advise leadership teams from major UK listed businesses, high-profile global NGOs, large private companies, and fast-growing scale-ups.
Working with Sillion
We work with organisations where energy transition and sustainability are material to valuation, licence to operate, regulatory standing, or community acceptance.
We operate as a high-end advisory practice, not an agency. We take on fewer, higher-stakes engagements where leadership judgement, narrative clarity, and credibility under scrutiny are decisive.
What we do
Retained Strategic Communications Counsel
Ongoing access to senior judgement, strategic perspective, and decision support. Advisory-led. Flexible. Non-operational.
Strategic Narrative & Positioning Project
A time-boxed, constructive assessment to surface structural issues within communication functions and enable leaders to fix them.
Comms Function &
Agency Diagnostic
A focused project to clarify, reset, or strengthen organisational narrative and positioning in the context of commercial reality and market expectations.
Private Markets
Transactions
Investor-grade positioning for private PE exits – making your portfolio company look and sound like the investment case, and driving interest under diligence scrutiny.
When we’re right,
and when we’re not
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Renewables, grids, storage, electrification, hydrogen, carbon, critical minerals, circular economy, industrial decarbonisation, and nature-linked markets.
Asset Managers and Asset Owners – responsible investment and stewardship challenges and positioning, thematic investment, overall comms posture for global asset managers requiring regional nuance.
Growth-stage businesses and scale-ups with transition exposure and a complex stakeholder environment.
Boards, funds, and deal teams needing narrative and stakeholder counsel – especially around transactions or major announcements.
New energy or sustainability units inside larger organisations that need senior comms counsel without building a full internal function.
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Stakeholder considerations are material: customers, investors, regulators, NGOs, communities, employees.
A senior sponsor feels personal reputational risk, direct or indirect - CEO, Founder, ExCo, Chair, and occasionally Head of Comms/Sustainability at very large organisations.
Senior sponsor lacks native literacy in either communications or energy/sustainability.
There is no world-class senior counsel in-house - but there is a strong desire for a trusted external brain.
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You need high-volume content production, campaign delivery, or a staffed outsourced team.
You are running an RFP designed to compare agencies on deliverables, rather than to procure senior counsel.
You have no concerns about your positioning, narrative, comms function or advisers.
You want a partner to defend positions that cannot be evidenced, or to blur uncomfortable trade-offs.
Led by
Tom Rayner
Sillion is principal-led by Tom Rayner. Clients work directly with Tom for large strategic challenges, sense-checks, and decision support - with executional capacity brought in only where it improves outcomes.
Get in touch
Please get in touch if you would like to know more about our offering.
We will be happy to discuss your context and whether our advisory approach is right for you.