I think it's stereotypical to say "I got straight A's from my A levels and a degree with honors from Cambridge, I therefore will make loads and loads of money", because that's just not true.
My mother's friend got enough GCSE's to pass, and enough A levels to pass... No university.
She works for a very large UK company in a position I will not disclose for a very large salary, we suspect it is ~125k/yr - why? Because she has brilliant people skills and is a convincing entrepreneur who's good at her job.
My dad, on the other hand, got straight A's from his A levels and a PhD from London's Imperial College. He works as the Senior Head of Technology for an up-and-coming office management company, he only makes (post-tax) ~35k/yr.
In short we can tell one sure fact from these cases: the grades you get at one level of education only help you to get to the next level. Once you've got to the highest tier of education (university degree with honors, I suppose) they mean very little. Sure, they're favorable but not ask any recruitment agency and they will say they prefer candidates with substantial prior experience in a field as opposed to those with prestigious degrees and even doctorates.
I admit there are some exceptions; doctors & lawyers need to have a specialized degree before they can be employed and it's as simple & clear cut as that. But in the vast majority of professions, I do not personally think academic qualifications play any part in it.












