The Targeted Lung Health Check (TLHC) is currently being rolled out in many regions of the United Kingdom and has just started in Nottingham. The same cohort of people are also at high risk for Chronic Obstructive Pulmonary Disease (COPD), a lung condition often caused by smoking and leading to breathlessness and cough. This study aims to provide pilot evidence of the role of breathing tests in those who have had a Computerised Tomography (CT) scan, in order to early diagnose COPD. Currently, at diagnosis, many patients have lost 30-40% of lung function already, which is not reversible. This study will use the Nottingham University Hospitals Trust Mobile Research Unit. The unit will follow the CT scanner route 2-3 weeks later, and people who have had a CT scan will be invited for breathing tests. Participants will also collect further information on potential treatment options for people diagnosed with COPD earlier -including smoking cessation, symptom management and general health advice (vaccinations, diet, activity and managing infections). There is also an optional blood test. The study aims are to determine the uptake and acceptability of breathing tests in patients at high risk of COPD, and if a community based approach co-locating with TLHC can increase uptake. A qualitative sub-study has been added to assess the opportunities or barriers for people being invited for a COPD diagnosis visit in the community. This sub-study will have a recruitment target of 20 participants. It will involve transcribed interviews. This will help determine the accessibility of the mobile research unit in use for this study.