Three London Councils Hit by Major Cyber-Attack, Emergency Plans Activated

Three London councils face a cyber-attack, disrupting services and prompting investigations into potential data breaches.

By Content Team

Nov 27, 2025

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Three London councils serving over half a million residents are dealing with a coordinated cyber-attack that began Monday morning. The Royal Borough of Kensington and Chelsea, Westminster City Council, and Hammersmith and Fulham have all been targeted, forcing them to shut down computer systems and phone lines as a precaution.

The National Crime Agency and National Cyber Security Centre are now investigating whether any resident data was compromised. Critical services remain operational through emergency plans, but residents face delays with council tax checks, parking fines, and other online services.

This echoes 2020's ransomware attack on Hackney Council, which encrypted 440,000 files and earned regulatory punishment. Officials warn other London councils may also be at risk.

Source: The Guardian

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