About
How we work
Sillion is a high-end advisory practice, not a communications agency. We work through board/CEO counsel retainers, fixed-fee strategic projects, and time-bound support for high-stakes moments.
Advisory-led strategy
With two decades of experience across energy transition, investment management, and sustainability - Sillion is a small practice focused on organisations for whom these issues are material.
Our work is advisory-led. Clients retain access to senior expertise, perspective, and sense-checking on complex, high-stakes issues.
Where needed, we do lead discrete projects supported by specialist resource, but we are not a communications agency and we do not operate as an outsourced team. Our value sits in judgement, pattern recognition, and decision support at senior level.
Engagement modes
Retained Strategic Communications Counsel
Ongoing access to senior judgement, strategic perspective, and decision support. Advisory-led. Flexible. Non-operational.
Strategic Narrative & Positioning Project
A focused project to clarify, reset, or strengthen organisational narrative and positioning in the context of commercial reality, sustainability ambition, and market expectations.
Comms Function & Agency Diagnostic
An independent, senior assessment designed to surface structural issues rather than tactical noise - so leaders can make confident decisions on people, structure, agencies, and expectations.
Private Market Transactions
Investor-grade positioning for private PE exits – making your portfolio company look and sound like the investment case, and drive interest under diligence scrutiny.
Our Principles
Senior-led
We default to being in the room where stakes are highest (CEO/ExCo/Board).
Selective
We work with a small number of leadership teams at any one time.
Advisory-first
Direction and decision support come before production.
High integrity
We are used to sensitive, high-consequence contexts.
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.