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Wrong meter reading sent the account into the red

Thames Water billing error came to light after £145,562 was taken from the bank account of Adam Bainbridge, a teacher living in north London. Bainbridge spotted the withdrawal on Thursday morning when checking his accounts; his family said the transaction pushed the account deep into overdraft and meant planned payments could not be made at the time.

According to the family, it was difficult to reach the company early that morning, and the first contact was made through a chatbot. Bainbridge then contacted his bank, and the money was returned to his account later the same day.

The company told the BBC that it had personally apologised to the customer and confirmed the wrongly collected money had been refunded. Thames Water also said it had offered the customer compensation as a goodwill gesture.

Complaint surge and bill pressure back in focus

The incident came at a time of growing dissatisfaction with water companies across England and Wales. Referrals to the industry regulator have risen by 84% over the past year, with customers’ concerns and uncertainty over bills playing a major role in the increase.

Households have faced higher water bills in recent years, while regulator Ofwat (the Water Services Regulation Authority) has allowed companies to raise bills by 36% in the 2025-2030 period. Even though this was a single error, it underlined once again why checks in direct debit and billing systems are critical for consumer trust.

  • Annual rise in complaints about water companies: 84%
  • Permitted bill increase between 2025 and 2030: 36%

Financial strain and next steps for the company

Thames Water, the UK's largest water company, is carrying debt of about £20 billion. The company is known to be in contact with creditors and government officials to avoid a possible collapse, meaning errors that damage customer trust add reputational risk on top of financial pressure.

The company said the mistaken charge was caused by human error stemming from an incorrect meter reading. Thames Water said it would introduce additional checks to its billing processes to help prevent a repeat.

The episode has once again highlighted how important basic verification mechanisms are for high-value payments, especially for households using direct debits. For consumers, it also reinforced the need to regularly monitor bill items and account activity.

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