William Harvey

Fractional SEO Leader, Head of SEO and Interim SEO Director

Senior SEO leadership for organisations that need direction, accountability and delivery, without a permanent appointment.

I have led organic search for 25 years, most recently as Global SEO Lead at Iron Mountain, an S&P 500 company, where I was responsible for more than 60 country websites in 35 languages. I set strategy, work directly with executives, Product and Engineering, and stay close enough to the technical detail to know whether the work is actually being done.

UK-based and available now for fractional, interim and advisory engagements, working remotely with UK and international companies including the United States.

UK-basedFractionalInterimAdvisoryUK, US and international clients
William Harvey
01 / When it is needed

Senior SEO leadership when the business needs it.

Most organisations do not need a permanent Head of SEO. They need someone senior enough to set direction, challenge what the agency is recommending, decide what gets built first and make sure it ships.

That need is sharpest at particular moments: a platform migration, entry into new markets, a change of agency, a gap while a permanent leader is recruited, or a board that wants to know what organic search is actually worth to the business.

I work with the CMO or marketing director, Product and Engineering to agree priorities, tie SEO investment to commercial targets and turn recommendations into delivered change. Engagements run as ongoing fractional leadership, a fixed interim period or a defined advisory assignment.

02 / How I can help

Five areas, one accountable lead.

01

SEO strategy and commercial growth

An organic strategy the board can read, with priorities set by revenue potential rather than ranking vanity.

  • Organic growth strategy and prioritisation
  • Branded and generic search performance, separated so you know what marketing is actually earning
  • Commercial KPIs, forecasting and executive reporting
  • Budget planning, investment cases and agency oversight
02

Enterprise technical SEO

The technical constraints that quietly cap visibility on large sites, found and fixed in the right order.

  • Crawling, indexation and site architecture
  • Core Web Vitals and site performance
  • Website migrations and platform changes, including the risk management no one budgets for
  • Python automation and continuous site monitoring
03

International SEO leadership

For businesses operating across many countries, languages and regional teams.

  • International architecture, hreflang and canonical governance
  • Localisation and regional search requirements
  • Global SEO standards and operating models
  • Coordination between central and in-market teams
04

AI search and automation

A realistic view of what AI search changes, what it does not, and where investment pays.

  • Visibility and measurement in AI search and answer engines
  • Applied AI and workflow automation within the SEO function
  • Specialist models and internal tooling
  • Practical advice on technology adoption and vendor claims
05

SEO leadership and delivery

Making SEO a function the wider organisation can plan around.

  • Leading and developing SEO teams
  • Integration with Product and Engineering, Jira and agile delivery
  • Stakeholder management and executive reporting
  • Agency and supplier coordination
03 / Engagement options

Three ways to work together.

01

Fractional Head of SEO

Ongoing senior leadership for a set number of days each month. For organisations with a team or agency in place but no one senior setting direction, holding them to account and reporting upwards.

02

Interim Head or Director of SEO

Full or near full-time cover during recruitment, restructuring, a migration or a period of rapid growth. I keep momentum and leave the function in better shape than I found it, with a clear handover to whoever follows.

03

Strategic advisory

A defined assignment on a specific question: international expansion, a technical investment case, team and agency structure, AI search strategy or a major platform change. Typically a diagnostic, a recommendation and a plan the team can execute.

04 / Experience

Experience that goes beyond audits.

At Iron Mountain I led global SEO across more than 60 country websites and 35 languages, working with regional marketing teams, technical specialists and engineering stakeholders across the business. I was named Iron Mountain's Global Marketing Star of the Year in 2025.

Before that I led SEO and technical development at Staysure Group, and earlier founded and ran three digital businesses, two of which I sold. That background matters: I have had to make SEO pay with my own money, not just recommend it with someone else's.

I have built SEO tooling at every organisation I have worked in: sitewide monitoring for broken links, canonicals, noindex and redirects, hreflang validation at page and site level, and early warning systems that alert stakeholders before a ranking or uptime problem becomes a revenue problem. More recently I have trained specialist AI models and built semantic topic and internal linking systems joined to GA4 and Search Console data.

Google has invited me to its Gold level Search Product Expert programme in recognition of contributions to the Search community.

The lesson from all of it is the same. Finding the opportunity is the easy part. Securing the budget, aligning Product and Engineering and getting the change live is where most SEO programmes fail, and it is the part I am most useful for.

05 / Who I work with

I am most useful to.

  • CMOs and marketing directors with an SEO team or agency but no senior SEO leader to direct them
  • International businesses running multiple markets, languages and websites
  • Companies preparing for a platform migration, redesign or major website change
  • Boards and marketing leaders who want an independent view on SEO investment and agency performance
  • Product and Engineering led organisations where SEO work keeps losing the prioritisation battle
  • Organisations that need experienced interim cover while they recruit
06 / Questions

Frequently asked questions.

What does a fractional Head of SEO actually do?

The same job a permanent Head of SEO would do, for an agreed number of days each month. I set the organic strategy, decide what gets prioritised, manage the agency or in-house team, work with Product and Engineering to get changes built, and report to leadership on what SEO is contributing commercially. What you do not pay for is a full-time salary, a long recruitment process or someone sitting in meetings that do not need them.

How is this different from using an SEO agency?

An agency delivers work. A fractional head decides which work is worth delivering and holds the agency to account for it. Most agencies are good at execution and understandably less willing to tell a client that half the recommended backlog will not move revenue. I sit on your side of the table, set the brief, challenge the recommendations and make sure the invoice matches the outcome. Clients usually keep their agency and get considerably more from it.

We already have an in-house SEO team. Where do you fit?

Above the team, as the senior lead they report to on SEO matters. Good practitioners often lack someone who can turn their work into budget cases, protect it in sprint planning and defend it in front of the board. I provide that cover, develop the team's capability and leave them stronger when I move on. I do not duplicate what they already do well.

How many days a month, and how is the time used?

Typically between two and eight days a month, agreed up front and reviewed each quarter. Early on, more time goes into diagnosis and setting direction. Once the plan is running, time shifts to steering: prioritisation, reviewing delivery, unblocking engineering and reporting upwards. I work in your tools and attend the meetings that matter rather than billing for presence.

How long does an engagement usually last?

Most fractional engagements run for six to twelve months, with an initial three-month period so both sides can judge fit. Interim cover during recruitment is usually three to six months. Advisory assignments are scoped to the question and can be a few weeks. None of it is designed to be permanent. The aim is to leave the organisation able to run organic search well without me.

How soon should we expect results?

It depends on where the problems are. Technical fixes on a large site can show within weeks of going live, though getting them built often takes longer than the fix itself. Content and authority work compounds over months rather than weeks. What I can commit to is that within 30 days you will know where the opportunity is, what is blocking it and what it will take to unblock. Within 90 days you will have prioritised work in delivery and a measurement baseline leadership can hold me to.

How much does it cost compared with a permanent hire?

A permanent Head of SEO or SEO Director in the UK costs well into six figures once salary, on-costs, benefits and recruitment fees are counted, and typically takes three to six months to hire. A fractional arrangement costs a fraction of that, starts within weeks, carries no notice period beyond the agreed terms and can be scaled up or down as the need changes. The fee is agreed monthly on the basis of days, so there are no surprises.

Are you strategic or hands-on?

Both, and the combination is the point. I have spent 15 years as a developer alongside leading SEO, and I still write Python, read crawl logs and check hreflang implementations myself. That means I can tell whether a recommendation is right and whether it has actually been built properly, rather than taking a report at face value. Strategy that cannot survive contact with the codebase is not worth much.

Will you work directly with Product and Engineering?

Yes, and I would insist on it. SEO work that lives only in marketing rarely gets built. I write requirements developers can act on, take part in backlog refinement and sprint planning where it helps, and make the trade-offs explicit so Product can prioritise with full information. At Iron Mountain this meant working with engineering and regional teams across more than 60 country sites.

How do you report on performance to leadership?

In commercial terms. Branded and generic performance are separated, so the board can see what marketing is earning rather than what the brand earns on its own. Pipeline or revenue influenced is reported where attribution allows it. Delivery against the agreed roadmap is tracked, so leadership can see whether the constraint is SEO or engineering capacity. The reporting is short, consistent and free of vanity metrics.

What about AI search? Is fractional leadership the right way to approach it?

It is a sensible way, because the main risk at the moment is spending on tools and content before the opportunity is understood. I measure where your brand appears in AI-generated answers, work out what is driving that and set realistic expectations with leadership. It then becomes part of the organic roadmap rather than a separate project with its own budget and its own panic.

What happens when the engagement ends?

A clean handover. The strategy, roadmap, measurement and operating standards are documented so a permanent hire, your team or your agency can carry on without me. If you are recruiting a permanent leader I can help define the role, assess candidates and overlap with them for a period. The measure of success is that the function runs well after I have gone.

07 / Next step

Let's talk about your SEO priorities.

I am UK-based and available now for fractional, interim and advisory engagements. I work remotely with organisations in the UK and internationally, including the United States, and can attend in person where it matters.

An initial conversation is free and usually takes 30 minutes. Tell me what is not working, or what you need to make a decision on, and I will give you a straight view on whether I can help and what it would involve.

William HarveyGlobal SEO Leader · Enterprise Technical SEO · International SEO · Applied AI and Automation

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