None of the subjects you have picked are required subjects. Graphic communication is also not an academic subject, so even if you have an A* in it, the top end universities might not favour it as a subject especially for competitive courses.
If you want to go into marketing, you need exactly zero qualifications to get in. Doing the CIM would be infinitely be more beneficial than any degree or A Level/BTEC.
If you want to get into a marketing degree (ideally something accredited by the CIM if you intend to only go into industry), then you can do it with A Levels or IB in any subject. Acceptance of BTECs and Access can vary from uni to uni, so you would need to check to be sure.
If you want to really play it safe, you can do 3 sciences + maths and be eligible for most degrees and apprenticeships outside of college and uni. However, if you don't intend to do anything that is related to or require STEM subjects, this is kind of redundant.
I think it's going to be easier if you would describe the sort of day and the sort of job that you could see yourself doing day in day out without getting bored. At the very least, say what you specifically don't want to do would significantly help narrow things down. If you need help in this area, let me know.