Fractional is having a moment.
The concept isn’t new; CFOs and CMOs have been available on a fractional basis for years. But in the last few years, fractional CROs, CCOs, and sales directors have become much more common, particularly in the UK startup and scale-up market.
Some of that enthusiasm is justified. Some of it isn’t. And as someone who does this work, I think it’s worth being honest about both.
What fractional actually means (and what it doesn’t)
Fractional leadership means you get a senior commercial leader working with your business on a part-time basis (typically two to three days a week), acting in the role as if they were full-time, but at a fraction of the cost and without the long-term commitment.
The important word is “acting in the role”. Not advising on the role. Not reviewing what someone else is doing in the role. Actually doing it: leading the team, owning the pipeline, making the calls, being accountable for the number.
The fractional model that doesn’t work is the one that’s really advisory wearing fractional clothing. Someone who comes in once a week, asks how things are going, shares some observations, and leaves. That’s expensive therapy. Useful, occasionally, but not the same thing.
When I work with a business fractionally, I’m embedded. That means I’m in the Slack, I know what deals are in the pipeline, I know what the reps are struggling with, and I’m having the hard conversations with the founder about what they need to change. If something time-sensitive comes up on a day I’m not scheduled, I’m reachable. The business runs as if they have a commercial leader. Because they do.
When fractional makes sense
You’re between hires. You’ve outgrown the founder selling everything but you’re not ready, or not sure, that you need a full-time VP of Sales. Fractional lets you get proper commercial leadership without the commitment of a senior hire you might not be able to sustain.
You’re not sure what you’re hiring for. This one’s underrated. Most businesses that hire a VP of Sales don’t really know what that person should be doing, because the function has never existed in a structured way before. A fractional engagement can define the role properly, build the foundations, and make the hiring decision much clearer. When the fractional period ends, you hire for a role with a defined scope, existing process, and some proof of what works.
You need capability you can’t sustain full-time. A Series A company might not be able to afford a £200k+ VP of Sales, and might not need one full-time yet. Fractional delivers the capability at a lower cost and a higher intensity than advisory, without the full overhead.
You’re preparing for something. Fundraising, an exit, an international expansion. These require the revenue story to be clean and credible. That’s faster to build with someone experienced doing the actual work than with an existing team trying to figure it out.
When fractional is the wrong answer
I’ll be honest here, because I think some people selling fractional services aren’t.
If you need someone daily, hire someone. Fractional is not a permanent substitute for a full-time leader. If your business is at the stage where you need someone in the room every day, building constant relationships with a large team, that person needs to be full-time. Fractional that runs for more than 18 months and never transitions to a full-time structure usually means something else isn’t working.
If the problem is execution capacity, not leadership. Sometimes businesses don’t need more leadership; they need more hands. If the existing leader is capable but buried, hiring an additional sales rep or a RevOps person might be the right answer. Fractional won’t fix a headcount problem.
If the founder isn’t ready to be challenged. This is the hard one. Fractional commercial leadership works when the founder is genuinely open to being told they’re wrong about things. I’ve seen this not work, not because the work was poor, but because the recommendations weren’t acted on and the engagement became an expensive way to feel like you were doing something.
If you want validation, advisory is cheaper. If you want change, fractional works.
The honest version
Fractional is a good model for a specific situation: B2B businesses that need serious commercial leadership, don’t need it full-time, and have a founder who genuinely wants someone to build something that doesn’t depend on them.
It’s not a fit for everyone. Part of my job in Discovery Week is figuring out whether it’s the right model for a specific business, and being willing to say if it’s not.
That’s what you should expect from anyone doing this work properly.
If you want to understand the specifics of how a fractional engagement works at UNFYS — scope, structure, and what embedded leadership actually looks like in practice — the Fractional CRO service page covers it in detail. Every engagement starts with Discovery Week: a fixed-scope diagnostic that produces clarity before any ongoing commitment.