Thorax
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The imminent publication of a randomised controlled trial from the USA that suggests CT screening reduces mortality from lung cancer by more than 20%, may potentially lead to one of the most important developments in lung cancer care. However, there remain important questions about the applicability of the results to the UK and the clinical effectiveness of this intervention, including its feasibility and cost-effectiveness. ⋯ There remain unresolved issues with respect to CT screening for lung cancer. These include its feasibility, psychosocial and cost-effectiveness in the UK, harmonisation of CT acquisition techniques, management of suspicious screening findings, the choice of screening frequency and the selection of an appropriate risk group for the intervention. UKLS is aimed at resolving these issues.