Multiple London Councils Responding to Cyberattack

Whether Hackers Stole Data Not Yet Known Akshaya Asokan (asokan_akshaya) • November 26, 2025

Several London city councils said they detected hacker activity on Wednesday night in an incident disrupting their telephone access and that may involve stolen data.

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The municipalities of Westminster and Kensington and Chelsea said they "are responding to a cybersecurity issue" that could also affect the borough of Hammersmith and Fulham. The three neighboring boroughs share IT services.

"At this stage it is too early to say who did this, and why, but we are investigating to see if any data has been compromised – which is standard practice," the boroughs said in a joint statement.

A National Cyber Security Center spokesperson said the agency is aware of the incidents and is ...