Applying with old A levels and grades

Sorry if this is the wrong forum I just created an account but I really need some advice.

Basically to cut a long story short when I originally did my alevels I took biology which I hated and never wanted to take in the first place but my mum told me I had to and by the time i wanted to switch they told me it was too late.

As a result I never attended my biology lessons or revised for it and ended up getting a U grade. I left school with an A* in economics a C in geography and a U biology as I previously stated.

In September I decided to go back to school and am predicted an A* in maths and an A in both computer science and further maths.

Im looking to go to uni for computer science or cyber security and am wondering if the U in biology will make me look like a bad applicant to Russle group unis and if so is there anything I can do to make me look like a better applicant?

From what I understand you dont have to declare previous A level grades on your application so they wouldnt even know about the U