GCS | Commercial Due Diligence, Value Creation & Growth Strategy

About

GCS (formerly, GRAPH Strategy UK) is an award-winning consultancy that supports entrepreneurial management teams and their investors at critical moments of the growth journey. We combine analytical rigour with clarity of thought to help you build conviction, manage risk, and move further, faster.

Annual growth since inception

bn+

Aggregate deal value supported

Deals recognised in awards shortlists

/10

Employee recommendation rating

Our Values

Principles in Action

Clarity

We deliver clarity when it counts. In high-stakes moments, we bring sharp thinking, structured narratives, and a clear point of view.

Rigour

We combine deep primary research with sound analytical methods to generate insights that are both evidence-based and commercially grounded.

Longevity

We take a long-term view in how we build relationships, contribute to the industry, and support our clients beyond the deal. We measure success not just by number of transactions, but by the lasting value and impact we help create.

Deep Expertise

Explore our comprehensive service offerings

Commercial Due Diligence (CDD)

Supporting management teams and investors with evidence-based insights for the moments that matter most. Whether acting on the buy-side or sell-side, we combine deep primary research, analytical rigour, and a clear point of view to help you make confident, informed decisions.

Key areas of analysis:

Market sizing and growth
Customer behaviour and satisfaction
Competitive positioning and risks
Business model attractiveness and growth drivers
Equity story and exit readiness

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Customer Value Creation

We believe deep customer insight is at the heart of any successful strategy. Our work helps clients understand how and why customers buy — and where opportunities exist to deepen loyalty, reduce churn, and grow share of wallet.

Core analytical lenses:

Voice of customer research — qualitative and quantitative
Churn analysis and retention drivers
Segmentation and cohort performance
Customer acquisition efficiency
Pricing and willingness-to-pay insights

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Strategic Growth

We help businesses unlock new revenue through international expansion, product innovation, and business model shifts — all grounded in rigorous market analysis, competitive insight, and a clear view of what it takes to win.

Areas we investigate:

International market prioritisation
New product and service evaluation
Competitive advantage and “right to win”
Business model optimisation
TAM/SAM analysis

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M&A Strategy

In a complex deal environment, we help clients unlock value throughout the investment cycle. Our work identifies the most attractive opportunities, measures risk, and supports successful execution, providing focused, actionable advice at every step of your journey.

How we support clients:

M&A target origination, mapping, and screening
Strategic fit assessments
Light-touch “pulse checks” and focused customer referencing
Assessment of bolt-on acquisitions
Exit preparation and value driver review

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Work that matters, with people who care

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Deep Expertise

Our Specialisms

Software is one of the most resilient engines of growth.

We've supported both established leaders and fast-growing challengers, helping them scale with stronger customer strategies that turn rapid growth into sustainable success.

Market positioning

Evaluating value proposition, adoption curves, and customer stickiness

Product & service differentiation

Benchmarking product portfolios, roadmaps, and service wrap

Business performance

Analysing retention, expansion, and unit economics to identify value drivers

Growth headroom

Evidencing opportunities for new wins, cross-sell, and upsell

Tech and data services are the backbone of digital transformation and AI adoption.

We support investors and management teams in navigating one of the fastest-moving services markets.

Sector expertise

Spanning data & AI, cloud, CX/CRM, ERP, cyber, core IT, networks & infrastructure, and MarTech

Revenue models

Evaluating the balance of project, recurring, and re-occurring revenues, and identifying levers to strengthen resilience over time

Client resilience

Assessing contract structures, relationship depth, retention, and growth trajectory

Differentiation & outlook

Clarifying distinctive capabilities and the future opportunities they enable

Services businesses succeed on trust, expertise, and their ability to leverage technology to drive scalability.

We’ve supported management teams and investors across a wide range of sub-sectors, helping evidence growth potential, test resilience, and shape strategy.

Human capital

Recruitment, staffing, education, and training

Consulting & advisory

Specialist and knowledge-based services across multiple sectors

Finance, legal & compliance

Regulated and risk-driven service models

Marketing, media & comms

Agencies, platforms, and communication services

Outsourced & intermediated services

Procurement, broking, and BPO/shared services

Technical & specialist services

Industrial services, occupational health, forensics, and testing, inspection & certification

The built environment is being reshaped by technology, sustainability, and new ways of working.

We partner with businesses that are driving change in how buildings and infrastructure are managed, operated, and future-proofed.

Facilities management

Hard and soft FM across commercial and public sectors

Advisory services

Surveying, property management, and data-driven consultancy

Sector-specific software & data

CAFM, ERP, BMS, BIM, cost management, and workflow tools

Compliance-driven services

Fire, water, asbestos, H&S, and related assurance

Energy & Net Zero

Retrofit, renewable power, utilities procurement, and broader sustainability solutions

Building products & infrastructure

Smart systems, IoT, access control, lifts, and transport/infra services

ESG has become central to business strategy, driving demand for companies that enable others to meet their sustainability and impact goals.

We help articulate and evidence the value of these businesses — clarifying their propositions, highlighting growth opportunities, and giving investors and management teams confidence in long-term outcomes.

Sustainability & carbon

Decarbonisation and Net Zero services, retrofit solutions, clean energy, and circular economy models

ESG data & analytics

Platforms and consultancies enabling disclosure, benchmarking, compliance, and climate risk insights

Social impact

Businesses in healthcare, education, housing, and social infrastructure with measurable social outcomes

Governance & risk

Compliance frameworks, GRC software, and risk advisory models