Why Hire A Fractional CMO vs A Consultant vs An Agency?

If you’re running a B2B company in that £2m–£30m+ bracket, you’ll recognise this moment - Marketing is happening. Everyone is busy. Pipeline still feels too dependent on a few deals, a few people, or a few lucky breaks.

At that point, most founders and MDs ask the same question: “Do we need to hire someone, bring in a consultant, or get an agency?”

The frustrating answer is: all three can work, and all three can fail, depending on what problem you’re trying to solve, and what you expect the solution to own.

This article is a practical way to hrelp you choose, without turning it into a procurement exercise that drags on for three months.

Agency vs. Consultant vs. Fractional CMO

Here’s the simplest way I can frame it...

An agency is usually a delivery partner.

Agencies are there to execute against a brief: campaigns, content, SEO, paid media, design, web, ABM, PR, video, you name it.

They can be brilliant, and they can absolutely move numbers, but agencies still need direction. Even the best agencies struggle when the brief is vague, the audience is “everyone”, and the internal team is split on priorities.

A consultant is usually there to advise.

Most consultants are paid for thinking: diagnosis, recommendations, workshops, audits, research, plans, decks, and frameworks.

That can be hugely valuable when you need a marketing reset, or a decision backed by analysis, but it often ends with: “over to you.”

If your team is already stretched, the plan becomes another document in the folder.

A Fractional CMO owns marketing as a commercial system.

A Fractional CMO does the strategy (like a consultant) and the execution (like an agency).

It's not in a “do everything” way, and not as a fancy advisor who disappears after the strategy. It's more like someone who takes responsibility for what marketing is meant to achieve, aligns the moving parts, and keeps it moving week-to-week, bringing in help or hiring along the way when needed.

A Fractional CMO's work includes strategy, yes, but also decisions, prioritisation, team direction, agency management, messaging, measurement, and the unglamorous activity and stuff that stops good intentions turning into results.

Why This Choice Matters More in B2B

In B2B marketing, your growth sits across:

• Positioning, and message discipline

• Sales and marketing working like one team

• Proof, and credibility that stands up under scrutiny

• A funnel that doesn’t collapse when someone goes on holiday

• Consistent demand creation, not random spikes of activity

So when pipeline isn’t where it needs to be, the problem is often how the whole system is set up, not whether you need more LinkedIn, or better ads.

That’s why the wrong hire, or the wrong agency brief, can cost you six months without ever looking like a failure. Everyone stays busy. Nothing really changes.

When an Agency is the Right Choice

Choose an agency when you already have internal direction and you need delivery capacity or specialist skills.

Your business is a good fit for an agency if:

• You have a defined offer, and you know who you’re targeting

• You have someone internal who can brief properly, and make decisions fast

• You want specialist execution (paid search, SEO, creative, video, ABM tooling, HubSpot ops, etc.)

• You can commit to a 3-6 month run at minimum, without changing priorities every fortnight

Aagencies get blamed unfairly when:

• The brief is really “we need growth”, but nobody has agreed what that means

• Sales follow-up is patchy, and marketing gets held responsible for revenue

• Leadership wants speed, but can’t make decisions on audience, message, or budget

• The agency becomes a substitute for internal leadership

If you’re going the agency route, one question saves a lot of pain: “Who owns the commercial result internally?”

If the honest answer is “nobody”, hiring an agency first often turns into expensive frustration.

When a Consultant is the Right Choice

B2B Marketing Consultants shine when you need a specific decision made well. For example:

• You’re entering a new market, segment, or category

• You need customer research, competitor work, or category mapping

• You need to sanity-check product-market fit, pricing, or packaging

• You want an independent view before investing in a hire, rebrand, or new website

• You want to train the team through a workshop, and leave them stronger

Where consultancy falls down:

• The output is a plan, but nobody has bandwidth to run it

• The recommendations assume 'ideal world' resourcing

• The business nods along, and then returns to business-as-usual

A strong consultant can still be worth their weight in gold. Just be honest about what you need.

If you need progress, not recommendations, you may need someone who will stay involved long enough to make it real.

When a Fractional CMO is the Right Choice

A Fractional CMO makes most sense when the business needs senior marketing leadership, but doesn’t need, or can’t justify, a full-time hire yet.

Common situations where it works well include:

1. You’ve outgrown “accidental marketing”

You’ve got a marketing exec, an agency, and a few tools, but there’s no consistent direction, and performance depends on heroic effort.

2. Pipeline is under pressure, and you need a grown-up plan

Not a “do more content” plan. A plan that ties offer to audience to message to channel to follow-up and ultimately conversion.

3. You’re PE-backed, or you’re being measured harder now

Reporting needs to improve, priorities need tightening, and marketing needs to stand up in leadership conversations.

4. You’re hiring later, but you need help now

A fractional leader can stabilise, fix the foundations, and set you up to hire well, rather than rushing into the wrong Head of Marketing.

5. You have agencies, but you don’t have someone to lead them

Agencies need direction and a strong brief. A Fractional CMO can make your partners work harder, without swapping them every six months.

The Cost Question

A full-time senior marketing leader is expensive, once you factor in salary, on-costs, risk, and ramp time.

For context, Glassdoor’s UK estimate for a Chief Marketing Officer / Head of Marketing role is around £123,792 per year.

That doesn’t automatically mean fractional is cheaper, by the way. It means fractional is more flexible, and usually quicker to deploy.

What you’re really buying is:

• senior decision-making without a long hiring cycle,

• fewer expensive wrong turns,

• and someone who will take ownership of the messy middle between strategy and results.

A Quick Decision Guide

If you want a simple way to choose, ask yourself these three questions.

1. Do we need direction or delivery?

If delivery: agency.

If direction: consultant or fractional.

2. Do we need someone to own this, week-to-week?

If yes: fractional.

If no: consultant (or a short advisory engagement).

3, Do we have internal leadership that can brief and steer an agency?

If yes: agency.

If no: agency will struggle, even if they’re good, so choose fractional.

The mistake I see most often is that founders or business leaders buy execution when what they actually need is leadership.

They add activity. They add tools. They add an agency. They add a new business hire.

And then they wonder why the commercial result doesn’t move.

If your offer is hard to describe, if your target customer is too broad, if your proof is weak, and if sales and marketing aren’t working from the same story, then execution just burns budget faster.

Weighing This Up Right Now?

If you want, I’m happy to sanity-check your situation with you in a short call and discuss:

• what’s currently happening,

• what’s getting in the way,

• and whether the right next step is fractional leadership, a consultant-style piece of work, an agency partner, or a mix.

If you’re under pipeline pressure, and you need senior eyes on it quickly, that’s exactly the sort of problem I step into.