Communications counsel for the energy and environmental transitions

We advise leadership teams on communications and positioning - in a shifting landscape with pragmatism and scrutiny on the rise.

Explore our services

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.

How we work

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 assessment to surface structural issues within your comms function and enable you to fix them.

Comms Function &
Agency Diagnostic

Clarify, reset, or strengthen organisational narrative and positioning in the context of new, more pragmatic market expectations.

Private Markets
Transactions

Investor-grade positioning for private PE exits – making your portfolio company look and sound like the investment case.

When we’re right…
… and when we’re not

    • Renewables, grids, storage, electrification, hydrogen, carbon, critical minerals, and nature-linked markets.

    • Asset Managers and Asset Owners – responsible investment and stewardship challenges and positioning; overall comms posture for global asset managers requiring regional nuance.  

    • Growth-stage businesses and scale-ups with transition exposure.

    • 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 a full internal function.

    • Stakeholder considerations are material: customers, investors, regulators, NGOs, employees.

    • A senior sponsor feels the reputational risk, direct or indirect - CEO, Founder, ExCo, Chair, or occasionally Head of Comms/Sustainability at very large organisations.

    • Senior sponsor lacks native literacy in comms and/or energy/sustainability.

    • There is no world-class senior counsel in-house - but there is a strong desire for a trusted external brain.

    • You want high-volume content production, campaign delivery, or an 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.

    • Deep down, you’d like a partner that won’t challenge around uncomfortable trade-offs.

Work with us

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.

Learn more about us

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.

Contact us