To hire a key account manager for one of the big four grocers, start by defining exactly what that customer needs from you this year, then look for candidates who have delivered growth with the same retailer or a similar one, and test them on that customer's data, buying team and ways of working. Tesco, Sainsbury's, Asda and Morrisons each buy differently, and a KAM who succeeds with one will not automatically succeed with another. This guide covers the brief, the experience to look for and a process that tests for both.
Why a big four key account needs a specific hire
The big four still account for most of UK grocery spend, but their positions are moving. Worldpanel by Numerator's data for the 12 weeks to 28 December 2025 put the shares as follows. For many suppliers, one of these accounts is the single largest line in the P&L, so the person managing it carries real weight.
| Retailer | Share, 12 weeks to 28 Dec 2025 | Same period 2024 |
|---|---|---|
| Tesco | 28.7% | 28.5% |
| Sainsbury's | 16.3% | 16.0% |
| Asda | 11.4% | 12.4% |
| Aldi | 10.1% | 10.1% |
| Morrisons | 8.5% | 8.6% |
| Lidl | 7.8% | 7.3% |
Those numbers shape the brief. A supplier growing with Tesco or Sainsbury's needs a KAM who can protect and extend a strong position. A supplier on Asda, which lost a full share point year on year, may need someone who can win investment and space from a retailer under pressure to recover. Grocery inflation of 4.3% in the four weeks to 28 December 2025 also means cost price conversations remain a core part of the job.
What each grocer asks of a key account manager
Each of the big four has its own structure, data tools and planning calendar. The detail changes often, so check the current picture with your own team, but these are the areas to explore when you write the brief:
- Tesco: The largest account for most suppliers, with a deep data and retail media offer through dunnhumby, which grew out of Clubcard. Look for KAMs who use customer data confidently and can build a plan around Tesco's own insight.
- Sainsbury's: Loyalty data and media services run through Nectar360. Strong KAMs here combine category insight with media and loyalty planning, often alongside a category or shopper marketing specialist.
- Asda: Share has been falling, which can mean more pressure on price and promotional investment. Look for resilience, sharp trade investment discipline and experience of commercial negotiation in a changing buying team.
- Morrisons: Share has been broadly stable. A KAM who understands its store estate, convenience operations and own manufacturing footprint can find opportunities competitors miss.
The experience that matters most
It is tempting to hire on the logo: 'they managed Tesco, so they can manage our Tesco account.' Same-customer experience is useful, but it is not the whole story. Weigh these factors:
- Category fit: Chilled, ambient, frozen, alcohol and household each have different buying structures, promotional rhythms and supply challenges.
- Scale and stage: Managing a top-ten supplier's account is different from growing a challenger brand with limited trade budget.
- Trade investment discipline: Evidence that they measure promotional return and stop activity that does not pay. Strong KAMs increasingly work with revenue growth management teams to do this.
- Code knowledge: The Groceries Code Adjudicator regulates relationships between the largest retailers and their direct suppliers. In its 2025 survey, 30% of suppliers reported a code issue and the most common concern was inadequate processes for resolving invoice discrepancies, cited by 17%. A KAM who keeps clean records and escalates properly protects your margin.
- Regulatory context: In England, volume price promotion restrictions on high fat, sugar or salt products came into force on 1 October 2025. For suppliers in those categories, promotional planning experience under the new rules is valuable.
Writing the brief for a grocery KAM
A clear brief speeds up the search and improves the shortlist. Agree it with the commercial director before you advertise or brief a recruiter, and include the account's current turnover and trend, the targets for the next 12 to 24 months, the size of the trade budget, who the KAM will work with internally and any team they will manage. Be honest about the state of the relationship with the buyer. Candidates will find out quickly, and the good ones respect candour.
A hiring process for a big four key account manager
Seven steps from brief to start date:
- Define the account plan. Write down the customer's priorities, your current position and what the new KAM must achieve in their first year.
- Set must-haves and nice-to-haves. For example, grocery multiple experience as a must-have and same-customer experience as a nice-to-have.
- Map the market. Identify KAMs and NAMs at suppliers in adjacent categories selling into the same customer, including those not actively looking.
- Screen for numbers. Confirm turnover managed, growth delivered and promotional results before the first interview.
- Run a customer-specific exercise. Give shortlisted candidates anonymised data for your category at that retailer and ask for a 12-month plan and a cost price increase approach.
- Involve the right people. Include the commercial director, a supply chain or demand planning partner and, where relevant, category or marketing colleagues.
- Close quickly and plan the handover. Strong grocery KAMs often have several options. Make decisions within days and plan how the outgoing contact will introduce the new KAM to the buyer.
Mistakes to avoid
- Hiring the title instead of the scope: A national account manager at one supplier may have less scope than a KAM at another. Compare turnover, accounts and team size.
- Over-weighting the buyer relationship: Buying teams move. Hire for capability that survives a change of buyer.
- Skipping the exercise: Interviews reward confidence. A data exercise shows how a candidate actually thinks about your customer.
- Leaving the account uncovered: A long gap on a big four account can cost a range review slot. Consider interim cover while you search.
Questions about hiring a grocery key account manager
They manage the supplier's commercial relationship with one retailer: agreeing the annual plan, negotiating terms, cost prices and promotions, and delivering volume, value and profit targets. They also coordinate supply, marketing and category support behind that customer.
It helps, but category fit, results delivered and trade investment discipline often matter more. A KAM with strong results at a similar retailer can usually learn a new buying team quickly.
It depends on the market and the candidate's notice period. Allow time for a targeted search, a two or three stage process and notice, and plan cover if the account cannot wait.
Titles vary. A national account manager often handles a larger customer or several accounts and may lead a team, while a KAM may manage one account. Compare turnover, scope and team size rather than titles.
Yes. The code governs how the largest retailers deal with their direct suppliers, and the Groceries Code Adjudicator enforces it. A KAM who knows it, keeps records and escalates properly protects the business.
If you are building a grocery customer team, see how our FMCG sales and key account recruitment team maps the market for each retailer, or read about our wider work for employers in the UK. TRG FMCG recruits KAMs, NAMs and controllers across the big four, the discounters and wholesale.