Falied GCSEs - Passed A levels, dont know what to do?

Yes, generally GCSEs are less important than A-levels as far as uni admissions go. It may depend a little on the particular course and/or university you wish to apply to, as some will weigh GCSEs more. However if you have achieved grades in A-level this would probably take priority over GCSEs. Also for most universities and "upwards trajectory" in grades is viewed favourably, such as if you did averagely in GCSEs but very well in A-levels.

For example Oxford generally uses GCSEs in shortlisting who to invite to interview, but any pre-interview admissions assessment will usually again be weighed more heavily (except for e.g. medicine at Oxford). LSE does consider GCSEs for some more competitive courses to filter applicants, but the personal statement is usually most important for them. For another example, for medicine generally some courses will use GCSEs as part of their scoring methodology (such as Oxford) and some don't (such as Cambridge), so you would need to identify those that don't to make sure you maximise your chances, if that is the course you were going to apply to).

There are also plenty of universities which don't care about GCSEs nor have any specific GCSE requirements at all though - such as Cambridge. In fact most universities don't care much about GCSEs other than sometimes requiring specific grades in GCSE Maths and/or English language; the few that do (such as the aforementioned LSE and Oxford) are very much exceptions to the rule.

If you genuinely had failed your GCSEs, then this would probably require a very good explanation of the circumstances by your referee. As it is, you have not failed, if you achieved B or C in all of them. A shade melodramatic, non?

I think it’s tough to get AAA in a level when your getting C’s in GCSE. Because personally I felt there’s big difference between 2

That certainly is reassuring . However is it really the case a university wouldn't pick someone with the exact same A level results as me but with better GCSE results over me?

I should mention the courses I have looked at that do have a GCSE requirement I have met.

That certainly is reassuring . However is it really the case a university wouldn't pick someone with the exact same A level results as me but with better GCSE results over me?

I should mention the courses I have looked at that do have a GCSE requirement I have met.

If you have both met the GCSE and A level requirements then you will be judged by personal statement, personality and super curricular activities related to your subject (eg watching podcasts -not sports).

You are at NO significant disadvantage with less great GCSES.

That situation basically will never happen, and even if there were two applicants with the same A-levels and GCSEs, universities will virtually always be looking at grades in context. Someone who got all Cs at GCSE while going to Eton will not be viewed as favourably as someone with the same grades going to a state school in the lowest 10% of exam performance metrics, who is in receipt of free school lunches. Even beyond contextual flags, there are other elements of the application which will never be identical - the personal statement, for example.

Well my extra curriculars are rather strong I have to admit, I am concerned since I have no excuse for performing so poorly in the GCSEs however.

Well I do happen to be a free school lunch recipient (single parent, low income, first to do A levels etc), however I am reluctant to mention that to any university out of embarrassment for one, but also I worry about being enrolled simply out of pity because of the background and not on the basis of merit.