The story

Carillion was the UK's second-largest construction firm and a major government services contractor — running NHS hospitals, schools, military bases and major rail projects. It collapsed into compulsory liquidation on a single Monday morning in January 2018, the largest ever for a UK construction business. Three profit warnings in 2017 had wiped £1.1 bn off its share price; the final lender refused new credit.

Why it failed

• Aggressive bidding on long-term contracts. To win against rivals, Carillion priced contracts on optimistic cost assumptions. When real costs ran higher (Royal Liverpool Hospital, Aberdeen bypass), losses compounded across years.
• Cash flow collapse despite revenue. Revenue stayed near £5 bn, but customer payment terms (90+ days) plus supplier payment demands (30 days) created a cash gap the company filled with short-term debt.
• Aggressive accounting and weak governance. A 2018 parliamentary inquiry called the board "complicit" in propping up reported profits. Auditor KPMG was fined £14.4m in 2022 and a further record £21m in October 2023 for misconduct in the audit.

What students should remember

• Profit on paper is not cash. A business with strong revenue and reported profit can still fail — it is cash flow that pays bills.
• Long-term contracts magnify pricing errors. A 5% mis-bid on a 10-year contract is not a 5% problem — it is a permanent margin trap.
• Audit independence matters. Carillion's auditor had been in place for 19 years. Familiarity reduced challenge.

The story

Britain's oldest travel company collapsed overnight, triggering the largest peacetime repatriation in UK history. The Civil Aviation Authority ran a chartered airlift — Operation Matterhorn — to bring 150,000 Britons home over two weeks. The company had asked the government for a £150 m bailout the previous Friday and been refused.

Why it failed

• Debt accumulated after the 2007 MyTravel merger. By 2019 net debt had reached around £1.7 bn through subsequent operations, refinancings and currency moves. Annual interest payments alone consumed roughly the company's entire annual operating profit.
• Slow response to digital disruption. Customers booked flights via Skyscanner, hotels via Booking.com, package deals via Jet2 and TUI — Thomas Cook still owned 555 expensive UK high-street stores in 2019.
• External shocks compounded the structural weakness. Brexit-driven sterling weakness, the 2018 European heatwave (people stayed home), and Boeing 737 MAX grounding hit a balance sheet with no margin of safety left.

What students should remember

• Heritage brand value is not infinite. 178 years of trust did not survive a structurally outdated cost base.
• External shocks hit the most leveraged first. A healthier balance sheet might have absorbed the same shocks. Debt removes options.
• Distribution model decisions are strategic, not tactical. Closing high-street stores would have hurt — keeping them was fatal.

The story

Sir Philip Green's Arcadia Group sold BHS to Retail Acquisitions — a consortium led by a former bankrupt with no retail experience — for £1 in March 2015. Thirteen months later the chain collapsed into administration with a £571m pension deficit affecting 19,000 people. A parliamentary inquiry called the deal "the unacceptable face of capitalism" and Sir Philip eventually paid £363m into the pension fund.

Why it failed

• Underinvestment in stores and product over a decade. While Primark and supermarket clothing brands grew, BHS stores became dated. Footfall halved between 2007 and 2014.
• Asset-stripping under previous ownership. Dividends of around £423 m were paid out to the Green family between 2002 and 2004 — money that did not go into stores, supply chain or product.
• An inappropriate buyer accepted as a way out. Selling to a buyer with no retail experience and limited capital simply transferred the inevitable collapse to a new corporate envelope, while leaving the pension obligations unresolved.

What students should remember

• Stakeholder obligations outlive ownership transfers. Pension promises do not disappear when a business is sold.
• Dividend policy is a strategic choice. Cash extracted as dividends cannot also be invested in stores. Boards face a real trade-off.
• Reputation contagion is real. Sir Philip Green's reputation across the rest of his retail empire suffered for years.

The story

In October 2018, Patisserie Valerie's directors discovered that the published accounts were fictitious. Reported cash of £28.8 m did not exist. Two secret bank loans of around £10 m had been hidden from the board. The Serious Fraud Office began an investigation. Three months later, after a rescue rights issue failed to fix the underlying gap, the chain entered administration. The fraud is one of the largest accounting scandals in UK AIM-market history.

Why it failed

• Accounting fraud disguised the true financial position. The Finance Director was arrested in October 2018; the Serious Fraud Office charged four individuals in 2021. For years the board, auditor (Grant Thornton) and shareholders thought they were investing in a profitable, growing business.
• Single-point-of-failure on financial reporting. Internal controls were weak enough that one senior figure could maintain a fraudulent picture for an extended period. There was no effective challenge from the audit committee.
• Aggressive expansion masked operational weakness. New store openings drove top-line growth that disguised falling like-for-like sales. When the fraud was discovered, the underlying business model also looked fragile.

What students should remember

• Audit is the third line of defence — but it is not infallible. Grant Thornton was fined £4 m by the Financial Reporting Council (reduced to £2.34 m for cooperation).
• Internal controls protect the firm from itself. The fraud was possible because no one could meaningfully check the CFO's numbers.
• Headline growth can hide problems. Investors should ask whether the growth comes from new openings or from existing stores.

The story

Wilko, the family-owned discount homewares chain, entered administration after years of falling sales and rising debt. Most stores closed within weeks; B&M and Poundland bought a portion of the leases. The parliamentary committee that examined the collapse criticised £77 m of dividends paid to the founding family between 2014 and 2022 while the company was visibly losing market share to B&M, Home Bargains and Poundland.

Why it failed

• Cost leadership lost to faster-moving rivals. B&M, Home Bargains and Poundland all grew faster, opened stores in better locations, and built more efficient supply chains. Wilko's average margins fell every year from 2017.
• Working capital squeeze. Suppliers, anxious about being unpaid, demanded cash on delivery. Wilko had to draw on increasingly expensive short-term debt to keep stock on shelves — which compressed margins further.
• Dividend policy at odds with reinvestment needs. The £77 m paid out to the family during a period of declining performance was money that could have refurbished stores or modernised the IT systems.

What students should remember

• Cost leadership is a treadmill. If a competitor lowers their cost base further, the original cost leader becomes the high-cost player overnight.
• Family ownership has trade-offs. No outside investor scrutiny, but also fewer external sources of capital and harder governance challenges.
• Working capital is a leading indicator. Suppliers tightening terms is one of the earliest signs an outsider can see of a retailer in trouble.

The story

Debenhams entered administration twice — April 2019 and April 2020 — before final liquidation in late 2020 after the failed Arcadia rescue talks and the Covid-19 lockdowns. Boohoo bought the brand and online business for £55 m in January 2021 and relaunched it as a pure online retailer. The 242-year-old brand survives only as a website.

Why it failed

• Long high-street leases at unsustainable rents. Stores were committed to 25-year upward-only rent reviews signed when prime retail was booming. By 2018, those leases were millstones.
• Slow online migration. Online was only 33% of revenue in 2018 — far behind direct-to-consumer competitors. The fashion department-store proposition (multiple brands under one roof, mid-tier price) was directly disrupted by ASOS, Boohoo and Amazon.
• Covid-19 closed stores faster than the company could pivot. Three lockdowns in 18 months pushed monthly cash burn beyond what a balance sheet already weakened by debt could sustain.

What students should remember

• Long-term leases lock in cost structures. They look manageable when rents are rising and footfall is strong; they are catastrophic when both reverse.
• Survival as a brand is not survival as a business. Debenhams.com exists. Debenhams the employer of 12,000 high-street staff does not.
• External shocks accelerate underlying decline. Covid did not start the rot — it shortened the timeline by perhaps a decade.