What is an ICP in sales? Define yours from your DMs
An ideal customer profile (ICP) is a short description of the kind of company, in the kind of situation, that's most likely to buy from you and get value from it. In sales, it's a filter for who you talk to this week, not a persona poster for the office wall.
Most guides stop at firmographics: industry, size, location. Those tell you who could buy. This page builds an ICP from behavioural signals you can actually see in a LinkedIn profile or a DM thread, tests it against your inbox, and gives you a free template.
ICP in one sentence
An ICP says which companies to spend time on. A buyer persona says how to talk to the person inside them.
| ICP | Buyer persona | |
|---|---|---|
| Describes | A company and its situation | A person and their role |
| Used for | Deciding who to target this week | Deciding what to say to them |
| Example | "UK B2B firms of 1–5 people where the founder sells in LinkedIn DMs" | "Founder, sells in the evenings, hates chasing, decides alone" |
Get the ICP right first. A perfect persona inside the wrong company is still a wasted conversation.
Firmographics are the floor, not the profile
"UK companies with 1–49 employees" sounds specific. At the start of 2025 there were 1,370,960 of them across all sectors (DBT, 2025). Narrowing to B2B still leaves far more than you could ever talk to. That's a market, not a profile. Firmographics rule people out. They don't tell you who's ready to buy.
Decision rule: if your ICP would fit more companies than you could talk to in five years, it's a market definition. Add signals until it isn't.
The 1,370,960 figure is two bands in the same release. Together they are still a market. The full split, including firms with no employees, is in B2B lead generation strategies.
UK private sector businesses with 1 to 49 employees, start of 2025
These two bands are the 1,370,960 businesses in the paragraph above. Firms with no employees, and firms with 50 or more, are in the chart on our B2B strategies guide.
Source: Department for Business and Trade, Business population estimates 2025
Four qualifying signals (behaviour beats demographics)
A good qualifying signal is something you can see, that predicts a booked call, and that you can count. Aim for up to four.
- Can you see it on a profile or in a thread without guessing?
- Does it predict a booked call, or just describe a company?
- Can you count it across your current conversations?
"Values innovation" fails all three. "Posted about hiring their first salesperson in the last 30 days" passes all three. "Uses HubSpot" passes the first only if it's on their profile.
Good signal types for a small B2B seller:
- Activity you can see. They post, comment or reply on LinkedIn about the problem you solve.
- A trigger event. New funding, a first hire, a move into a new market, a public complaint about the old way of doing things.
- Who sells. The founder is the one doing the selling, so the person you talk to is the person who decides.
- How they work. The channel and tools they use day to day, if it affects whether your product fits.
Worked example: our own ICP, and who we say no to
This is DealGate's ICP, from our own positioning work. It's a real example, not a hypothetical.
UK founders of 1–5 person B2B businesses who:
- have 10+ live sales conversations in LinkedIn DMs,
- booked at least one call from a DM in the last 90 days,
- are the only person who sells, and
- use desktop Chrome for LinkedIn most days.
Not our ICP: agencies running many sender accounts, recruiters, volume senders and local consumer businesses.
Each of the four is observable. You can see from someone's posts and replies whether they sell in DMs. You can ask "when did you last book a call from a LinkedIn message?" in one line. The disqualifiers matter as much as the signals: they stop us spending a week on someone whose needs don't match what we offer today. If you're one of those, a dedicated outreach tool may fit better; see how the tools compare.
| Field | DealGate's answer |
|---|---|
| Segment name | UK founder who sells in LinkedIn DMs |
| Company size | 1–5 people |
| Revenue model | B2B services or software sold on calls |
| Geography | UK first |
| Must-have signals | 10+ live DM conversations; a DM-booked call in 90 days; only seller; desktop Chrome |
| Disqualifiers | Multi-account agencies, recruiters, volume senders, local consumer businesses |
| Where they talk | LinkedIn DMs and comments |
| Trigger event | A warm lead went quiet because they forgot to reply |
Test your ICP against your inbox in 30 minutes
An ICP you haven't tested is a guess. Here's the test:
- Export or list your last 60 days of LinkedIn conversations using the inbox audit sheet from our LinkedIn lead generation guide.
- Mark each conversation: matches all signals, matches some, matches none.
- Mark which ones turned into calls.
- If most calls came from "matches some", one of your signals is wrong. Find which one the call-makers lacked and drop it.
- Write the problem in their own words for the three best conversations. Use those words in your next connection notes and first messages.
Hypothetical example. A founder selling payroll software tests "10–50 employees" as a signal. Of nine calls booked from DMs, six came from firms with fewer than ten people who had just hired their first employee. The size signal was wrong; the trigger event ("first hire") was the real one.
ICP template
Once you know who you're looking for, the next question is which channels reach them. Our ranked B2B lead generation strategies and social selling guide cover that.
Where DealGate fits
DealGate helps once your ICP is talking to you. It shows who's warming up or waiting on your reply in your LinkedIn DMs and drafts your next message in your voice. Coming soon: replies auto-send within caps and pacing, with a safety pause if LinkedIn shows a warning. Pricing: $0.99 for your first month, then $29/mo founding price ($49/mo list).
FAQ
What does ICP stand for in business development?
Ideal customer profile. It describes the kind of company, and the situation it's in, that gets the most value from what you sell and is most likely to buy. In business development it's used to decide who to spend time on.
What's an example of an ICP?
Ours: UK founders of 1 to 5 person B2B businesses who have 10 or more live sales conversations in LinkedIn DMs, booked at least one call from a DM in the last 90 days, are the only person who sells, and use LinkedIn in desktop Chrome most days. Agencies running many sender accounts, recruiters, volume senders and local consumer businesses are not our ICP.
How is an ICP different from a buyer persona?
An ICP describes the company and its situation and tells you who to target. A buyer persona describes the person inside it and tells you how to talk to them. You need the ICP first.
How often should you update your ICP?
Review it every quarter, or sooner if your evidence count changes a lot. If most of your recent booked calls don't match it, the profile is wrong, not the calls.
How do you write an ICP?
Start from your best recent conversations, not a brainstorm. Write down up to four observable signals they share, the disqualifiers you keep running into, and the problem in their own words. Then count how many of your current conversations match. Our free template walks through each field.
Sources
Accessed 10 Oct 2026.
- Department for Business and Trade, "Business population estimates for the UK and regions 2025" (1,150,875 businesses with 1–9 employees and 220,085 with 10–49): https://www.gov.uk/government/statistics/business-population-estimates-2025/business-population-estimates-for-the-uk-and-regions-2025-statistical-release
- DealGate's ICP: our own positioning, published here as our own example.