Clearing and conditional offer

If you apply through UCAS only to one university for one BA course and you get a conditional offer for that university course, if you don't end up able to meet the conditional offer, what happens? Can you go on clearing for they course if there any spaces left?

You would need to pay the extra fee but yes you d go into clearing.

But can you go into clearing for the same course if you were originally rejected from that course for not meeting the conditional offer?

Yes but that's pointless it's like they won't change their mind unless you got much better grades than expected.

But what if the reason you were denied a place originally on a course is because you didn't meet the conditional offer but through clearing could they accept you on that same course and would overlook the fact that that you didn't meet the conditional offer?