medicine

Here are my gcse results
french-4
maths-5
physics-5
computer science-5
engish lang-6
english lit-6
biology-6
chemistry-6
geography-6
arabic-7

i want to study medicine at university preferably uni of birmingham as its close to my house and i dont want to move out. i meet the entry requirements except for maths so im thinking of resitting bio chem and maths in june and hopefully getting a higher grade. so my question is if i get a good ucat have good work experience and good predicted grades and basically everything else in my application is good then what are the chances of me getting into medical school specifically uob. Because they take gcse grades into high consideration. thank you in advance.