Advisory Services

Impact Advisory.

Understand your total ESG impact. Report with confidence.

What we do

Turning ESG complexity
into clear, credible action.

GCX Impact Advisory helps organisations measure, manage and disclose their sustainability performance across environmental, social and governance dimensions: from initial assessment through to aligned reporting and strategic action. Whether you are responding to investor pressure, regulatory requirements or stakeholder expectations, we give you the structure and support to act with confidence.

Key capabilities

  • ESG impact measurement & baselining
  • Double Materiality Assessment
  • Sustainability strategy & roadmap development
  • ESG reporting aligned to GRI, ISSB & SASB
  • Stakeholder engagement strategy
  • ESG governance frameworks & policy
  • Performance tracking & target setting
Frameworks, standards and regulations we work to

How we work

A structured path
from anywhere to impact.

Clients can enter at any phase depending on where they are in their journey. No prerequisites: just a clear next step.

Phase 01
Foundation

Understand your context

Establish a clear picture of where you are: your material issues, peer positioning and gaps.

  • Capacity building & team alignment
  • Current state assessment & gap analysis
  • Sector & industry review
  • Peer review & benchmarking
  • DIRO (Dependencies, Impacts, Risks, Opportunities) assessment
  • Double materiality assessment
Phase 02
Blueprint

Lay the blueprint

Translate insights into a clear sustainability framework, strategy and governance structure.

  • Sustainability framework design
  • Sustainability policy development
  • Position statement
  • Strategic roadmap & priorities
Phase 03
Embed and Embody

Act and embed

Turn strategy into practice: implement, report, and build it into the way you operate.

  • Action & Implementation plan
  • Quantification of risks & impacts
  • External stakeholder engagement strategy
  • Integrated & sustainability reporting

Choose your starting point

Start where you are.
We'll take it from there.

Foundation

Establishes a clear, shared understanding of your sustainability context, priorities and gaps: informed by peer and sector insights.

Best suited for

  • Beginning your ESG journey
  • Needing a structured baseline
  • Preparing for investor or regulatory queries

Blueprint

Expanded visibility, a defined strategy, and guided frameworks to support proactive and informed sustainability decision-making.

Best suited for

  • Ready to formalise your strategy
  • Needing governance and policy structures
  • Linking ESG data to business decisions

Embed and Embody

Full implementation support, reporting and strategic partnership to elevate ESG performance and enable confident, future-facing disclosure.

Best suited for

  • Advancing toward leading ESG practice
  • Requiring integrated reporting support
  • Targeting credible, audit-ready disclosure

The team

The people behind
your programme.

Experienced advisors with deep sector knowledge: here to guide you through every phase.

Cathie Lewis, Head of Impact at GCX
Cathie Lewis
Head of Impact
LinkedIn
Zahra Khan, Impact Advisor at GCX
Zahra Khan
Impact Advisor
LinkedIn
Georgia Emms, Impact Analyst at GCX
Georgia Emms
Impact Analyst
LinkedIn

Client story

Hear from
our clients.

Real organisations. Real outcomes.

Ready to take
the next step?

Talk to the team: we'll help you find the right starting point.