The study engaged multiple case study design using semi-structured interviews, observation and Framework Analysis techniques. The LCNS is crucial within the Multi-Disciplinary Team (MDT) and is a catalyst to patient eligibility for treatment. This impact was realised through the LCNS clinical activity (assessment, managing symptoms, psychological support and information provision) and role characteristics. The researchers advocated that, if UK lung cancer patient survival rates are to improve in line with comparable European countries, we need to employ every advantage. This nurse-led study demonstrates how the LCNS role opens doors to positive patient outcomes, including treatment.