GCSE grade help

These are my gcses grades I know they are not fails but I’m worried they are not good enough for good university’s. Nothing like Cambridge or Oxford but other goodish university’s in London. I put no work in my gcse which I deeply regret I studied the morning of each exam.
Science 7-6
English language-7
English lit-6
Geography-6
RS-6
Art-6
Dt-6
Maths-5 (I’m resisting maths and I’m working towards an 8/7 as it’s the only 5 here) is it a good idea to resit?

Depends what course and university you want to go to.
In general, your grades are ok. I recommend you resitting maths to get a 6 min.

Yess I am planning on resitting maths, do you think it’s fine after that then?

As I said, it depends on what university and course you want to apply to.
Top universities normally require you have at least a 6 in maths and a 6 in English language.