Sorry to hear you're stuck in this predicament. I would certainly not cope in such a strict culture, but when you say your Dad is the type to bring you back home by force, if by force you mean violence, THAT"S NOT OK!! If he physically abuses you report that **** and get away.
More to your situation, only you know what's best. The idea of running away probably may sound appealing to you at the time, perhaps causing you to overlook the potential negatives of the situation. So please don't take this as criticism, I'm simply giving you an argument as to why not and then I will leave it for you to decide.
1) Finances - How are you going to fund all this now your income is likely to be completely obliterated. My Halls of Residence were £153 per week, so in total rent and loan cost me £6000. Not to mention all the other costs - tuition and food. A part-time job is just not going to cut it. You'll need to work closer to full time. SFE will pay for the tuition, and your Parents are likely to refuse to help, meaning you'll be entitled to a minimum of 3k. If you want to make the decision to runaway, make sure you have the finances in place to make the jump to become fully independent from your Parents. I would at the very least a have a job secured for when you go to university if you're going to make this decision.
2) You mention applying through clearing, more specifically to Warwick. I doubt there will be spaces, but hey, you can place down a bet. In my opinion it's a bet with very low odds of happening.
3) Destroying the relationship with your Parents - And by doing this, you're likely to succumb to incredible loss tangibly and intangibly. Is this something you're prepared to do? Independence is great, but you can't click your fingers in a day and achieve it. This all takes time.
4) Finally, what if your runway plans fails? You run out of money? You left home and didn't secure that place at the university? What then? Wil your Parents accept you back?
Honestly, if I were you, I'd have to ensure I had at least a year's finances set in place and a guaranteed position with housing at the university before making such a drastic decision. I would have also ideally liked to have secured a job in the region I'm applying to. Try writing a post-mortem for the absolute best and absolute worst scenario? Where do I end up if this fails? Where do I end up if I succeed? Is the risk-reward worth it?
In the post-mortems, consider why things could end negatively and why things end positively. Only you know what's worst. But I'd hazard a guess that worst case if it fails, it would be you have no money, no home and a ruined relationship with your Parents. There's a percentage chance of this happening, as there is with every decision. Personally, me being risk-averse, I wouldn't even take it if it were 1%. But I don't know your circumstances or upbringing, fortunately for myself my Parents have been very kind and this is solely why I would not do what you're about to do.
Good Luck.