Make sure you are up to date with the BTS guidelines, particularly those that are new or have been updated in the last year or eighteen months.
See the guidelines and latest guidelines on Lunglead. There have been a lot of questions on Lung Cancer including staging, TB, Physiology and Imaging in the past few years.
Most of all get plenty of practice on SCE questions. Work through the Speciality Certificate Examination Use the SCE questions as a mock exam to practice your timing. All have explanations and targeted further reading.