Absolutely foolish to drop out. You will have wasted over £10,000 in student loans for NOTHING. You will be back to where you were on A-Level results day at 18. Don't be a quitter. Finish what you started.
I went through an awful time last semester, I wanted to run away and quit. I got a grip started doing all-nighters to get myself where I needed to be and made it through with 60%. I learnt alot about what I was doing wrong in terms of time management and studying. Failure is where you grow. If you fall hard you'll bounce back up even harder. You're a basketball dude.