In a significant setback for the UK’s corporate registry, Companies House has temporarily suspended its online filing service following a critical glitch that exposed sensitive personal information. The breach allowed users to access and potentially manipulate confidential data related to other businesses, raising alarms about the risk of identity fraud.
Glitch Exposes Personal Data
The vulnerability in the Companies House system was identified after a user discovered that pressing the back button on the site’s dashboard enabled access to details of other companies. This flaw reportedly exposed sensitive information, including directors’ home addresses, email addresses, and dates of birth.
Dan Neidle, founder of Tax Policy Associates, brought the issue to light on Friday, describing it as a potentially “very serious” situation. Neidle expressed concern over the ease with which this vulnerability could be exploited, stating, “People could gather enough data about a company and its directors to potentially commit fraud—such as impersonating the company itself.” He further cautioned that the implications could be dire, enabling malicious actors to redirect important documents to themselves if they altered company addresses or filed misleading accounts.
Companies House Response
In light of the discovery, Companies House acted swiftly to suspend its WebFiling service while they conduct a thorough investigation. A spokesperson for the agency acknowledged the disruption and issued an apology to users affected by the downtime. They assured customers that they would take into account any filing delays that arose due to the service’s unavailability, encouraging users to document any issues they encountered.

According to the agency, Companies House manages records for over five million companies, including major corporations like AstraZeneca, Shell, and Tesco. The breach has raised questions about the security measures in place to protect such a vast amount of sensitive data.
Legal Implications
Under the Computer Misuse Act 1990, unauthorized access to computer systems can result in severe penalties, with maximum prison sentences of two years for general breaches and up to five years for accessing data with the intent to commit further crimes, such as fraud. The potential for exploitation of this glitch underscores the urgent need for robust cybersecurity measures within public-facing services.
Why it Matters
This incident underscores a troubling vulnerability in a key component of the UK’s business infrastructure. The exposure of personal data not only poses immediate risks for the individuals involved but also undermines public trust in the institutions designed to safeguard corporate information. As Companies House works to rectify the situation, it raises critical questions about data protection protocols and the responsibility of government agencies to ensure the security of sensitive information. As businesses increasingly rely on digital platforms for compliance and transparency, the repercussions of such breaches could have lasting effects on the integrity of the corporate sector.
