Ideal customer profile – ICP – is one of those terms that gets used in marketing meetings and then quietly ignored, usually because the version written down is too vague to act on. “SMEs in the South East who value quality” is not an ICP. It is a description of almost everyone.
A useful ICP does one thing: it lets someone decide, quickly, whether an opportunity is worth pursuing.
ICP and persona are not the same thing
An ICP describes the organisation you serve best: sector, size, structure, situation. It is what you filter prospects by.
A persona describes the person you are speaking to inside that organisation: their role, what they are measured on, what they fear. It is how you decide what to say.
You need both, and they do different jobs. Most businesses write personas because they are more enjoyable to write, and skip the ICP because it requires admitting which clients have not worked out.
Build it from your own data
The ICP is already in your accounts. You are looking for the pattern in the clients you would happily take ten more of.
Start with your best clients, defined properly
Not the biggest. The best – which usually means some combination of profitable, straightforward to deliver, likely to stay, and willing to refer. Take your top ten by that definition.
Then your worst
The ones that lost money, consumed disproportionate management time, or ended badly. This list is more informative than the first, and more uncomfortable.
Find what separates them
Look for observable characteristics rather than attitudes. “They value design” is unknowable before you work with them. These are observable:
- Sector and sub-sector – the narrower the better
- Size, by whichever measure matters: turnover, headcount, sites, vehicles
- Structure – owner-managed or private equity backed, one site or many
- How they buy – one decision-maker or a committee, tendered or negotiated
- The trigger – what had just happened when they came to you
That last one is the most valuable and the most often missed. New premises, a new MD, a failed supplier, a regulatory deadline, a growth target. If most of your best clients arrived after the same trigger, you know what to watch for.
Writing it so it is actually usable
One paragraph, specific enough that two people would sort the same prospect list the same way. Something closer to:
“Owner-managed manufacturers and engineering firms in the East of England, £2m–£20m turnover, 20–150 staff, selling B2B with a technical sale and a named decision-maker. Usually come to us after winning a contract that exposes how dated their website is.”
Then write the exclusions, which is where an ICP earns its keep: who you do not serve well, and what makes you walk away. A sales team with permission to say no is far more productive than one chasing everything.
What it changes
Who you target. Prospect lists and advertising audiences get built from the ICP, which is what stops you paying to reach people who will never buy – the same discipline covered in building a prospect list.
What you say. Content written for a narrow ICP is specific, and specific content converts. Content written for everyone reads like everyone else’s.
What you turn down. The hardest and most profitable change.
How you qualify. Your pipeline stages should reference the ICP. A deal that does not fit should be visible as a risk, not hidden among the rest.
Frequently asked questions
Can we have more than one ICP?
Two or three if you genuinely serve distinct markets differently. More than that usually means none of them are defined properly.
Does narrowing cost us work?
It reduces the number of opportunities and usually increases revenue, because effort concentrates where you win. You can still take good work outside the ICP — you just stop building the business around it.
How often should we revisit it?
Annually, or whenever something structural changes. It drifts quietly as the business evolves.
What if we are too new to have data?
Use a hypothesis, write it down, and test it. The point is to be specific enough to be wrong, so you learn something.
Get the definition right first
Positioning, messaging and targeting all depend on knowing precisely who you are for. We work that out with established businesses and build the marketing on top of it — see our brand positioning service, or get in touch.
