Too big to fail is a procurement choice, and the market management guidance says so
When a strategic supplier wobbles and a government department discovers it has no realistic alternative, the inquest usually blames contract management. The Market Management Guidance Note, published by the Cabinet Office in May 2021, locates the fault earlier: in years of commercial strategies that quietly traded long-term market health for short-term convenience. Bigger bundles, longer terms, fewer suppliers, easier governance. Each decision looked efficient. Together they built markets where three bidders is a good day and switching is theoretical. The guidance is government admitting the pattern and handing buyers a method to break it.
The drift towards concentration is a series of rational decisions
Nobody sets out to create an over reliant market. The guidance is honest about how it happens: short-term affordability pressures and limited contract management capacity push teams towards fewer, larger contracts. Aggregation reduces overheads today and weakens competition tomorrow. The NAO has documented third sector bidders priced out by resource intensive processes, and the Public Accounts Committee has asked openly whether some suppliers are now too important to be allowed to fail.
What the guidance adds is a discipline for noticing the drift while it can still be corrected. Bids received, market shares, win ratios, switching costs: these are not exotic economics, they are counts and divisions on data every buyer already holds. A market where the C3 ratio is creeping towards 100 percent, or where the same three suppliers win everything, is telling you something years before a failure makes it obvious.
What most organisations get wrong
The commonest failure is treating market assessment as a business case formality: a few paragraphs of desk research written after the commercial strategy is already decided. The policy is built to prevent exactly that. Strategic Outline Cases must demonstrate that assessment and consideration of market health options actually happened, and the Markets and Suppliers team can proactively check. An assessment that did not influence the lotting strategy, the contract duration or the risk allocation is not an assessment, it is decoration.
The second failure is stopping at award. The guidance expects monitoring through the life of the contract, with assessments refreshed when markets shift or break clauses approach. Mid-contract is when government often has real leverage, and it is usually the moment nobody is looking.
Reading indicators like a practitioner
The guidance's worked example is instructive: three suppliers, rising concentration, an HHI of 3,818, healthy-looking bid counts, and KPI performance falling across the board while total contract cost rises. No single number condemns the market. The pattern does. That is the skill the guidance is trying to teach: triangulate structure (shares, concentration), conduct (bids, win ratios) and outcomes (cost, quality) before concluding anything.
It cuts both ways. A concentrated market with low entry barriers can be fiercely competitive, and a fragmented one can be quietly cartelised. The indicators are prompts for questions, not verdicts, which is why the guidance pairs them with market engagement and access to competition economists, the Markets and Suppliers team and, for bigger problems, the CMA.
Start with the data you already generate
Every tender you run produces the raw material of market management: participation, pricing, awards, performance. Buyers who keep that data structured can produce a credible market assessment in days, not months, and can defend their commercial strategy at approval gates with evidence rather than assertion. Buyers who let it scatter across inboxes and spreadsheets rediscover their own market from scratch every retender.
So make the boring choice first: get your procurement data into one system, watch the handful of headline indicators the guidance names, and let them shape lotting, duration and risk allocation before the strategy is signed. Healthy markets are not an accident. They are the compound interest of well-designed tenders.
The takeaways
- Market concentration builds slowly through individually rational commercial decisions: the guidance exists to interrupt the pattern.
- Market assessments must shape strategy before the Strategic Outline Case, not decorate it afterwards.
- Headline indicators are simple calculations on data buyers already hold: bids received, shares, win ratios, switching costs.
- No single indicator is a verdict: triangulate structure, conduct and outcomes.
- Structured procurement data is the cheapest route to credible market management.
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