i am in the exact situation as you, fortunately apart from the moving around-
i thought i would undertake computer science in uni until the end of Y12, so i have had little time to undergo projects, and my only relevant work exp has been springpod airbus and CAA
predicted A*AA (very generously) still holds me no success at top aerospace universities, but in the recent weeks i have been obsessed with the Aeronautics and Spacecraft Engineering course at imperial, and here’s my rough idea of how i may get into it
i am planning on taking a gap year, i am aiming for A*A*A* in Maths, Physics, Comp Sci achieved (which is probably the only i can even be considered, given my gcses are like 77666555555, and i have no A level further maths)
IF and only if i achieve these results will i then focus my attention on getting into imperial, else i will probably just keep my offer at sheffield, and either do the Msc Advanced Aerospace Engineering at Imperial, or the Msc Astronautical and Spacecraft Engineering at cranfield.
i am currently planning to do a few projects similar to that guy (Intezgra?) on youtube, making really abstract “jet engines” and similar as projects, and then obviously sitting and preparing hard for the ESAT.
I also believe i may take AS level further maths in my gap year if i achieve these results, or at least somehow show off extra maths abilities (perhaps by signing myself up or training for maths competitions) to make up for that flaw in my application
I hope to join or create some sort of aerospace based research group or something of that sort to mimic like a teamwork based environment around something technical, as this would look crazy good on a statement or in an interview. (i will probably post about it on reddit asking for helpers if i feel like i stand a chance applying.)
when it comes to how much of a chance we have, it starts and ends at A level or equivalent grades i fear, as everyone applying will have the top grades, and if you fall short, then you are instantly dragged to the bottom. but i feel like as long as you have those A*s, you have the foundational chance that then allows your application to rely on your ESAT, extra and super curriculars, and then interview.
good luck to us both, i sincerely hope we both get in.