UK fraud cases surged to 4.1 million in 2025 with criminals using AI to impersonate voices and manipulate victims, prompting calls for stricter tech platform oversight.

What happened: The UK reported 4.1 million fraud cases in which money was stolen last year — up 11% year-on-year and a 31% rise compared with 2023 — with almost £1.3bn stolen by scammers. Criminals are deploying AI to mimic the voices of celebrities and victims' family members, enabling scams at scale. Banks also documented cases where fraudsters married victims to continue stealing money.

Why it matters: The scale is severe enough that the banking trade body now describes fraud as a 'national security threat' given the emotional and financial harm to victims. Experts believe the majority of scams go unreported, meaning the official figures understate the true problem. Banks say they cannot defend consumers alone and are calling for tech companies to implement stronger monitoring and security measures on their platforms.

What to watch: Investment scam losses jumped 40% in a year to a record high, and purchase scams (using stolen card details) also reached record levels. Experts are predicting a surge in scams tied to the men's football World Cup in the coming days and weeks, suggesting the threat landscape is actively evolving.