When you apply you will be asked to choose the pathway you would like to enter and the undergraduate degree that you intend to progress to. The modules you will take depend upon your intended undergraduate degree and are subject to availability and timetabling.
You will not be tied to your choice of undergraduate degree; however, it is important that you make the right module choices. This is because some undergraduate programmes will have compulsory modules that you should take in your Advanced Placement bridging year and you will be required to achieve a specified grade in order to progress to that course.
Some modules may be shared by the different pathways, so you will be studying alongside students from other disciplines. This will give you the opportunity to share your ideas and increase your knowledge in different areas of study and form academic networks outside your main discipline.