Multiple London councils’ IT systems disrupted by cyberattack post, november 26, 2025december 1, 2025 The Royal Borough of Kensington and Chelsea (RBKC) and the Westminster City Council (WCC) announced that they are experiencing service disruptions following a cybersecurity issue. Multiple systems have been impacted by the attack, including phone lines, which prompted the two councils to activate emergency plans to make sure that residents still receive critical services. The two authorities have been impacted at the same time because they share some IT infrastructure as part of joint arrangements. Multiple London councils’ IT systems disrupted by cyberattack: Multiple London councils’ IT systems disrupted by cyberattack cybersecurity 2025