Inclusion criteria  As YKST will involve only consenting participants of T2 round of YLST the same inclusion criteria for the YLST Lung Health Check at the T0 stage will be used for YKST, namely:  High risk for lung cancer as defined by one of the three criteria:  30 pack year history of smoking and current smoker or quit within the last 15 years (USPSTF criteria). Lung cancer risk of ≥1.51% over 6 years as calculated by the PLCOM2012 score. Lung cancer risk of ≥5% over 5 years as calculated by the LLPv2. score.  Exclusion Criteria:  Have undergone CT Thorax within the previous 6 months Unable to provide informed consent to study Unable to have a chest or abdominal non-contrast CT scan Previous diagnosis of kidney cancer Have undergone abdominal CT scan in previous 6 months