The government has drawn up a contingency plan for Thames Water in case the UK’s biggest water company runs out of cash. Environment secretary Steve Reed has signed off on the appointment of FTI Consulting to prepare for the possibility that Thames is put into a special administration regime, which is the emergency insolvency process used to keep essential public services running while a company is stabilised or sold. Thames supplies about 16 million people across London and the Thames Valley, so ministers want a plan that guarantees the taps stay on whatever happens.  

Thames Water’s financial problems are well documented. The company’s net debt is about £17.7 billion, and its regulatory gearing is around 84.4 percent, a level that leaves little room for shocks or big new investment. A rescue equity deal fell apart earlier this year and the company is now trying to secure roughly £5 billion from senior bondholders to put a wider recapitalisation in place. The government keeps saying the company is currently stable, but it is also clear that officials are preparing for every outcome.  

If special administration is needed, it would follow rules that have been updated in the past two years. In the water sector, special administration is different from normal administration because keeping water and wastewater services running is a legal objective, not just a business goal. In 2024, the regime was changed so that administrators must first consider whether the company can be rescued as a going concern, using court-approved restructuring tools if needed. If rescue is not realistic, they can transfer the regulated business to a clean subsidiary and sell the shares in that entity to a new owner, a technique known as a hive-down that helps attract buyers without dragging across legacy liabilities.  

There is also a plan for how to pay for an intervention. In the short term, the government can lend to the company or indemnify the administrators so operations are not disrupted. In the longer term, ministers have said that the Water (Special Measures) Act 2025 allows certain special administration costs to be recovered later through customer bills, which is why they are keen to avoid using the regime unless there is no other option.  

For customers, the practical promise is continuity. Special administration would keep water flowing and sewage collected while the company is restructured or transferred. For investors and creditors, the updated rules tilt the balance toward service continuity and rescue. That means shareholders would likely be wiped out, and some creditors could take losses if the company is recapitalised within the procedure or hived down into a sale vehicle. For the wider industry, a Thames intervention would set the playbook for how highly leveraged water firms are handled in the UK if market solutions fail, and it would influence how lenders price risk across the sector.  

The bigger question is what this means for bills, rivers and investment over the next few years. If Thames avoids special administration and closes a market-led funding deal, the company will still need to spend heavily to cut leaks and sewage discharges, which is what regulators and the public expect. If special administration happens, the company would be stabilised first, then restructured or sold, but the money still has to come from somewhere. That is why the rescue objective, hive-down option and cost-recovery backstop were added to the rulebook. They are meant to keep essential services running, make a turnaround possible and give the government a way to fund an interim period without writing a blank cheque.  

On balance, the contingency work is not a signal that the lights are about to go out. It is an admission that a company serving 16 million people is too important to leave to chance. What happens next will depend on whether bondholders agree to back a credible plan and whether Ofwat and ministers are satisfied it delivers better service and cleaner rivers at a fair cost to customers. If they are not, the courts now have a tested framework to step in, keep the water running and force the restructure that private talks could not deliver.