Jaguar Land Rover's recent cyberattack is projected to have cost the UK £1.9 billion, marking it as potentially the most economically damaging cyber event in the country's history. The attack led to a month-long shutdown of production and internal systems, affecting over 5,000 organizations, while the government provided a £1.5 billion loan guarantee to support the carmaker's recovery. Analysts attribute the financial impact to lost sales, production delays, and wider supply chain disruptions.