Supply chain risk does not explode overnight. It accumulates. Slowly. Silently. The Carillion case is the story of a collapse that was always coming — where every signal was visible, every alarm was documented, and nobody wanted to stop and listen.
2008 — The foundations begin to crack
It all starts with the global financial crisis of 2008. Carillion, like many large construction companies, decides to expand aggressively into British public contracts. Hospitals. Schools. Railways. The goal is to grow — at any cost.
To finance this expansion, the company adopts a strategy that will become its downfall: it imposes payment terms of up to 120 days on its suppliers. Four months. In a sector where liquidity is oxygen, this choice creates enormous pressure throughout the supply chain.
2012-2015 — The ignored signals
Over the following years, Carillion’s balance sheets tell an increasingly worrying story. Debts grow. Margins shrink. Public contracts are won at ever lower prices — often below cost — just to maintain business volume.
Internally, warning signals exist. Some managers flag them. But the board prefers to look the other way. Press releases remain optimistic. Dividends continue to be paid to shareholders. The façade holds.
2016-2017 — The Ponzi scheme cracks
At this point, Carillion operates like a Ponzi scheme. It uses new contracts to pay previous debts. It accumulates debts to subcontractors of around £350 million. And it continues to win new public contracts — not because it is competitive, but because it needs fresh liquidity to survive.
In 2017, the company issues three profit warnings in just six months. The share price crashes by 80%. Yet the British government continues to award it new public contracts. Nobody wants to believe that such a giant could really collapse.
January 2018 — The collapse
On 15 January 2018, Carillion declares insolvency. It is the largest bankruptcy in the history of the British construction sector.
The numbers are devastating: £1.5 billion in debts. 30,000 subcontractors left without payment. Thousands of direct employees without work. Construction sites blocked across the country. The British government forced to intervene urgently to guarantee the continuity of essential public services.
A domino effect that nobody had wanted to prevent.
What Carillion teaches us
The story of Carillion is not the story of a sudden crisis. It is the story of ten years of ignored signals.
The unsustainable payment terms were visible in the contracts. The growing debts were documented in the balance sheets. The fragility of the supply chain was evident to anyone who wanted to look.
Monitoring the financial health of your suppliers is not a luxury. It is a necessity. Diversifying the supply chain is not an excessive precaution. It is the difference between a resilient company and a ticking time bomb.
Conclusion
Carillion had everything: billion-pound public contracts, thousands of employees, decades of history. It lacked just one thing — a serious culture of supply chain risk management.
The risk was there. For years. Visible to everyone. And ignored by everyone.