Fractional CDO & Data Leadership UK | Head of Data as a Service | Gethyn Ellis

Fractional CDO · Head of Data · UK

Senior Data Leadership
Without the Full-Time Cost

A fractional CDO or Head of Data gives your organisation access to senior data strategy, governance, and AI readiness leadership on a part-time or retained basis — without the £120,000–£180,000 salary of a full-time hire. Gethyn Ellis provides data leadership grounded in hands-on Microsoft platform expertise: Fabric, Power BI, Azure, SQL Server, and Copilot.
Microsoft Certified Trainer — not just a strategist You deal directly with Gethyn — always Flexible retained or project-based engagement

Full-time CDO salary UK

£150k/yr

Plus employer NI, pension, benefits, recruitment fees — typically 30–40% on top

Recommended

Fractional data leadership

Fraction of the cost

Retained or project-based. Scale up or down. No recruitment. No overhead. Get a quote →

Generic consultant day rate

£900/day

Project-based only. No ongoing ownership. No team mentoring. No board-level continuity.

Is this right for you?

You Have Data. You Don't Have Anyone Leading It.

Most growing organisations reach a point where data is producing reports but not decisions — tools are in place but nobody owns the strategy. If any of these sound familiar, fractional data leadership is almost certainly the right answer.

You have Power BI, SQL Server, or a data warehouse — but no clear strategy for how they connect or what they should deliver

Data sits in silos across departments — finance has their numbers, operations have theirs, and nobody agrees on the single source of truth

You can't justify a £150k+ CDO salary, but you need more than a project consultant who delivers a report and disappears

Your board keeps asking data questions nobody in the organisation can confidently answer — decisions are made on gut feel or late-arriving spreadsheets

Microsoft Copilot licences are live but adoption is low — nobody is driving an AI readiness or data quality programme to support it

GDPR compliance and data governance are handled reactively — there's no framework, no data owner register, no policy that people actually follow

You have a small data team but nobody senior enough to mentor them, set standards, or translate business needs into a coherent technical direction

You're planning a Microsoft Fabric or Azure migration and need strategic oversight — not just implementation, but someone to ensure it actually lands in the business

What's included

Six Areas of Data Leadership Coverage

Every engagement is scoped to your organisation's specific needs and maturity level. These are the six core areas a data leadership engagement with Gethyn Ellis can cover.

Data Strategy & Roadmap

A structured data and insights roadmap aligned to your business goals — not a generic framework. Covers what to collect, how to govern it, and how to turn it into decisions that move the business forward. Built around your Microsoft platform investment.

Data Governance & Compliance

GDPR compliance, data quality frameworks, data ownership registers, and policy design. Governance that people actually follow — not a 40-page document that sits in SharePoint. Includes preparation for the Data (Use and Access) Act 2025.

AI Readiness & Copilot Adoption

Assessing your data estate's readiness for AI workloads, developing a responsible AI framework, and driving Microsoft Copilot adoption across your organisation. Your data foundation has to be right before AI can deliver value — this is the work that makes it possible.

Analytics & BI Oversight

Strategic oversight of your Power BI environment, reporting standards, and self-service analytics capability. Includes semantic model governance, KPI framework design, and ensuring your reporting estate is fit for purpose as your data maturity grows.

Platform Advisory — Fabric & Azure

Strategic guidance on Microsoft Fabric adoption, Azure data platform architecture, and the migration path from SQL Server or legacy systems. As an MCT with hands-on Fabric delivery experience, this is strategic advice grounded in technical reality — not just PowerPoint.

Team Development & Mentoring

Building your internal data capability through mentoring, structured development plans, hiring guidance, and knowledge transfer. The goal is to reduce dependence on external support over time — not to create it. Includes training delivery across Power BI, Fabric, and SQL Server.

How it works

Three Engagement Models

Engagements are structured to match your organisation's data maturity and budget. All start with a Data Maturity Assessment. All scale up or down as your needs evolve.

Advisory

1–2 days per month

  • Data Maturity Assessment
  • Strategic data roadmap
  • Monthly oversight calls
  • Board-level reporting support
  • GDPR and governance guidance
  • Email and async support

Interim

Project or fixed-term basis

  • Full data leadership cover
  • Platform migration oversight
  • Data team leadership
  • Vendor and procurement support
  • Permanent hire support and handover
  • Knowledge transfer programme
The differentiator

Data Leadership Grounded in the Microsoft Platform

Most fractional CDOs are pure strategists. They design frameworks but can't tell you whether Microsoft Fabric is the right call for your workload, or why your Power BI semantic model is undermining trust in the data. Gethyn Ellis combines board-level data leadership with hands-on platform expertise — so your strategy is grounded in the technology your organisation actually runs on.

Microsoft Fabric
Power BI — PL-300
Azure Data Platform
SQL Server 2008–2022
Microsoft Copilot
Power Platform

Gethyn Ellis is a Microsoft Certified Trainer (MCT) — qualified to deliver DP-603 (Microsoft Fabric Real-Time Analytics), PL-300 (Power BI), DP-900, and AI-900. Data leadership advice is backed by the ability to deliver at the platform level.

How engagements work

From Discovery to Ongoing Leadership in Four Steps

Every engagement starts the same way — with an honest conversation and a structured assessment. What follows is shaped entirely by what your organisation actually needs.

1

Discovery Call — Free, 30 Minutes

A direct conversation with Gethyn about your organisation's data challenges, current platform, team structure, and what good looks like for you. No account manager. No pre-prepared pitch. Just an honest conversation. Book a slot here.

2

Data Maturity Assessment

A structured review of your current data landscape — platforms, governance, team capability, reporting quality, and AI readiness. Produces a maturity score across five dimensions and a prioritised action plan. This is the foundation everything else builds on.

3

Roadmap & Engagement Scoping

Based on the assessment, we agree a data and insights roadmap and the right engagement model — Advisory, Embedded, or Interim. Scope, days per month, and commercial terms are agreed before any ongoing work begins.

4

Ongoing Data Leadership

The engagement begins. Typically this means regular leadership sessions, governance oversight, platform advisory, team mentoring, and board-level reporting support — all scaled to the agreed model. Engagements can be extended, scaled up, or concluded at any point. The goal is always to build your internal capability, not to create permanent dependency.

Why Gethyn Ellis?

What You Get That Generic Fractional CDOs Don't Provide

The fractional CDO market is growing. Most providers are strong on strategy and frameworks. Here is where the Gethyn Ellis engagement differs.

What matters to youGeneric fractional CDOGethyn Ellis
Platform expertiseStrategy only — limited hands-on Microsoft platform knowledgeMCT-qualified across Fabric, Power BI, Azure, SQL Server, and Copilot
Who you work withAn account team — the named CDO may delegate to colleaguesGethyn Ellis directly — every session, every deliverable
Training and team capabilityAdvisory only — no ability to deliver training to your teamMCT-qualified — can deliver accredited training as part of the engagement
AI readinessHigh-level Copilot awareness — no data platform depthEnd-to-end: data quality, governance, Copilot configuration, and adoption
FlexibilityMinimum terms, fixed day counts, limited scalingRetainer or project-based, scalable, no lock-in
Cost transparencyVariable day rates, scope creep, complex invoicingAgreed monthly scope — no surprises
Track record

Data Leadership Delivered Across UK Organisations

5+
Sectors served including financial services, housing, public sector, professional services, and non-profit
4
Microsoft platform areas covered in every data leadership engagement — strategy is never platform-agnostic
MCT
Microsoft Certified Trainer status — the only fractional CDO provider who can also deliver your team's accredited training

Not every organisation needs a full-time Head of Data. But most need experienced data leadership more often than they expect. As platforms mature, decisions become harder and priorities compete. Data Leadership as a Service gives you ongoing access to senior, pragmatic data leadership — without the cost or commitment of a permanent hire.

— Gethyn Ellis · Data Leadership Framework

The Data Platform Accelerator gave us the clarity and direction we had been missing. We went from a fragmented set of tools to a coherent platform strategy with clear ownership and a roadmap we could actually execute against.

— IT Director · UK Public Sector Organisation

Common questions

Frequently Asked Questions

A fractional Chief Data Officer (CDO) is a senior data leader who works with your organisation on a part-time or flexible basis. They own your data strategy, governance framework, analytics capability, and AI readiness programme — without the cost or commitment of a full-time hire. Typical engagements run from one to three days per week depending on organisational need.
A full-time CDO salary in the UK typically runs from £120,000 to £180,000 per year — before employer NI, pension, benefits, and recruitment costs. A fractional engagement delivers equivalent senior leadership at a fraction of that cost, with no fixed overhead. Book a free discovery call for a specific quote based on your scope and requirements.
A data consultant delivers a specific project with a defined output — a report, a dashboard, a migration. A fractional CDO acts as an ongoing senior leader inside your business: owning your data strategy, running governance meetings, mentoring your team, and presenting to your board. They are embedded in your organisation, not external to it. The engagement is continuous, not project-bounded.
If your organisation has fewer than 200 employees, is pre-Series B, or does not yet have significant in-house data capability, a fractional model almost always delivers better value. A full-time CDO makes sense once data leadership is a daily, multi-team function requiring permanent presence. Gethyn Ellis can also support you in finding and onboarding the right permanent hire when the time comes, through his network.
Yes — and this is where the Gethyn Ellis engagement differs from most fractional CDO providers. As a Microsoft Certified Trainer with hands-on experience across Microsoft Fabric, Power BI, Azure, SQL Server, and Copilot, data strategy advice is grounded in specific platform knowledge. AI readiness work includes data quality assessment, governance for AI workloads, and Copilot adoption planning — not just high-level advisory.
Engagements begin with a Data Maturity Assessment and a structured roadmap. Ongoing retained support typically involves regular strategy sessions, governance oversight, platform advisory, team mentoring, and board-level reporting support. You engage directly with Gethyn Ellis throughout — not an account manager or junior team member. Engagements are scoped monthly and can be scaled up or down as your needs evolve.
Gethyn Ellis has delivered data leadership and consulting engagements across financial services, public sector, housing associations, professional services, education, and non-profit organisations across the UK. If your organisation uses Microsoft technology — Power BI, SQL Server, Azure, or Fabric — the engagement is directly applicable regardless of sector.
Your data leader

Gethyn Ellis — Fractional CDO & Microsoft Certified Trainer

Gethyn Ellis combines senior data leadership experience with hands-on Microsoft platform expertise — the only fractional CDO provider who is also an MCT. Every engagement is delivered by Gethyn directly, not delegated to a team. Clients get strategic data leadership, platform advisory, and team development from a single, accountable point of contact.

  • Microsoft Certified Trainer (MCT)
  • Microsoft Fabric — DP-603 qualified
  • Power BI — PL-300 qualified
  • Azure Data Platform experience
  • SQL Server 2008–2022
  • AI-900 and Copilot delivery
  • Financial services, public sector, housing
  • UK-based, remote and on-site delivery

Meet the team · Listen to the podcast · Read the blog

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Ready to Put Senior Data Leadership Into Your Organisation?

Start with a free 30-minute discovery call. A direct conversation about your data challenges, your Microsoft platform, and whether fractional data leadership is the right fit.

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No lock-in · Scales with your needs · Remote & on-site UK