Customer Concentration Risk in Food Businesses: What It Costs You at Exit
If your largest customer accounts for more than 25 percent of your revenue, you already know it is a risk. What most UK food and beverage founders do not know is precisely what that risk costs them at the point of a transaction - and how much of that cost is recoverable in the years before going to market.
Customer concentration is consistently identified as the most common deal-killer and the most reliable multiple suppressor in UK food and beverage M&A. Analysis of 2025 transaction data shows that businesses where the top customer accounts for more than 40 percent of revenue face a multiple reduction of 2x to 3x compared to diversified businesses with equivalent EBITDA. For a business generating £1.5m of normalised EBITDA, that is a difference of £3m to £4.5m in headline enterprise value.
This article explains why concentration creates that discount, how buyers use it in negotiations, and what you can do about it before any process begins.
Why Buyers Discount for Customer Concentration
When a buyer acquires your food business, they are acquiring a stream of future cash flows. Their valuation is essentially a bet on the sustainability of those cash flows over the medium term. A single customer representing 40 percent of revenue is not just a risk - it is a structural fragility that could destroy 40 percent of the investment thesis overnight.
Buyers understand the dynamics of large retailer or foodservice customer relationships. They know that retailer category reviews happen annually. They know that supply base rationalisation programmes are a constant feature of the major supermarket landscape. They know that a decision made in a buyer's office in Welwyn Garden City or Wakefield can eliminate a contract that represents years of a founder's working life.
A trade buyer who is also a competitor is acutely aware of this because they have experienced it from the other side. A private equity buyer who has owned food businesses before has almost certainly watched a key customer leave mid-hold. Both buyer types price that risk into their offer structure.
The Concentration Discount: What the Numbers Look Like
Transaction analysis from 2025 and 2026 identifies the following typical concentration discounts in UK food and beverage:
Top customer above 40 percent of revenue: 2x to 3x reduction in EBITDA multiple versus a diversified comparable
Top customer 25 to 40 percent of revenue: 1x to 2x reduction
Top customer 15 to 25 percent of revenue: 0.5x to 1x reduction
Top customer below 15 percent of revenue: no concentration discount applied
The discount mechanism operates through two channels. The first is a direct reduction in the multiple offered. The second is structural - buyers increasingly use earn-out provisions to bridge the valuation gap created by concentration risk, deferring 30 to 50 percent of the purchase price and making its payment contingent on the concentrated customer relationship surviving the transition.
How Buyers Use Concentration in Due Diligence
Concentration is rarely the reason a deal fails at the outset. Buyers are aware of it before they make an approach or table an offer, often because the information memorandum or initial financial pack reveals it. The concentration risk is typically used in one of three ways during the process.
The first is in the initial offer structure, where the multiple applied to the concentrated revenue stream is lower than the multiple applied to diversified revenue. The second is in the due diligence phase, where the buyer asks increasingly detailed questions about the contractual status of the concentrated customer relationship, the renewal history, and the nature of the supply agreement. The third is at heads of terms, where the buyer proposes a larger-than-expected deferred consideration or earn-out specifically tied to the concentrated customer continuing to trade with the business post-completion.
A seller who understands this dynamic in advance can prepare for each of these moments. A seller who does not is constantly responding rather than managing.
What a Diversified Business Looks Like to a Buyer
The benchmark that most sophisticated UK F&B buyers use is the 15 percent rule: no single customer should represent more than 15 percent of revenue. Businesses that meet this threshold are described in deal processes as having "balanced route to market" - a phrase that signals to every buyer in the room that they are not acquiring a customer dependency risk alongside the business.
A balanced route to market across retail, foodservice, direct-to-consumer, and export channels is worth a premium of 1.5x to 2.5x in the multiple versus a single-channel business with concentration. For a business generating £1.5m of EBITDA, that premium range is £2.25m to £3.75m of additional enterprise value.
How to Reduce Concentration Before Going to Market
The good news is that customer concentration is not a permanent feature of a food business. It is the result of decisions made over years, and it can be addressed with a deliberate programme over the two to three years before a transaction.
The most effective approaches are not complicated. Opening a second retail channel alongside the dominant one - adding foodservice volume alongside retail, or building a direct-to-consumer platform alongside wholesale - changes the revenue composition without requiring the removal of any existing relationship. Winning a second or third anchor customer in the dominant channel reduces the proportional weight of the largest one. Growing export revenue, which is typically distributed across multiple customers in multiple markets, inherently reduces concentration.
The key is to start early. Concentration cannot be resolved in the six months before a process. A buyer will look at two to three years of revenue history and assess the trajectory of the concentration metric. A business that has moved from 45 percent to 22 percent concentration over two years tells a buyer that the risk is being managed. A business that has been at 45 percent for five years tells a buyer the founder has not addressed it.
The Concentration Conversation with Your Largest Customer
One of the fears founders express about reducing concentration is that the dominant customer will perceive the diversification as a signal that the relationship is changing. The opposite is usually true. A supplier that demonstrates commercial resilience - that it is not existentially dependent on any single relationship - is a more attractive long-term partner to a sophisticated buyer such as a major retailer.
Most large retailers and foodservice operators are aware that supplier fragility - where the supplier is wholly dependent on the customer - creates its own risk. A supplier that collapses because of a contract reduction creates supply chain disruption. A commercially resilient supplier is a better long-term partner.
Frequently Asked Questions
Is 25 percent concentration always a problem?
It depends on the nature of the relationship. A 25 percent customer on a five-year fixed-price supply agreement with automatic renewal provisions is a materially different risk to 25 percent on a twelve-month rolling supply agreement. Buyers look at contractual security alongside the percentage.
What if my largest customer is a major retailer with a long track record?
The track record matters but does not eliminate the discount. Major retailers regularly review their supply base and have demonstrated willingness to switch suppliers or reduce orders for commercial reasons. The longevity of the relationship increases buyer confidence but does not remove the structural risk of concentration.
How quickly can concentration be reduced?
In our experience, a structured programme over 24 to 36 months can move most businesses from above-threshold concentration to a more defensible position. The starting point is identifying which new channels or customer segments are most accessible given the existing product range and production capability.
What is the contractual position on my largest customer relationship?
This is the first question a buyer's legal team will ask. Undocumented or informally structured supply relationships - common in food businesses built on founder relationships - are treated as a binary risk in due diligence. Formalising the contractual basis of the key customer relationship, even if the underlying terms remain the same, significantly reduces the discount a buyer will apply.
If I cannot reduce concentration before an exit, what is the best approach?
Full transparency in the process is always better than discovery in due diligence. A seller who presents the concentration clearly, with a well-argued narrative about the relationship's stability and the growth of other channels, is in a better position than one whose concentration is surfaced as a due diligence finding. Buyers price uncertainty more heavily than known risk.
