Got a Ucas or results related question? Ask a Clearing and Applications Advisor here

If a place as your firm is confirmed on Thursday, then you will have the option to decline it and drop into Clearing. You don't have the option to opt for your Insurance choice instead (although you may be able to go there via Clearing).
You don't have you decide in results day, but obviously the longer you leave it, the less chance there is that you'll get something suitable via Clearing. In theory, you could wait as long as enrollment day at your firm - but that wouldn't be terribly polite.
You can request that your firm defer your confirmed place, but they have no obligation to do so. If they do defer it, you can always decline it later.
Why all the indecision?

Thanks so much that’s really helpful. I am not sure I still want to go to my firm choice, but not sure if other options would come up in clearing - so just looking at all options including deferral

Thanks so much that’s really helpful. I am not sure I still want to go to my firm choice, but not sure if other options would come up in clearing - so just looking at all options including deferral

Understood. The fact that you are "not sure I still want to go to my firm choice" is a little worrying, this late in the process. Are you hoping that a really attractive alternative becomes available via Clearing, and that will help you make-up your mind?

can you explain a bit more what your concerns are about your firm choice? Sometimes it helps to talk (or type) it through to work out the best options

Yes it is the cost, it would be higher because the course is longer and there is less help with this

I see - and would a gap year help with that do you think? Or would you just be in the same situation this time next year?

Hi, I'm 15 marks off an A in bio and 16 off an A in chem, my parents are willing to pay to get all 3 papers reviewed for each of them but is it worth it? I feel like its rly unlikely I'll get an A from either even if I get some extra marks but im also very unlikely to go down a grade if I lose a few so idk if its worth the money

Have your requested your scripts? This is free and if you can get your teachers to look through them first, they should be able to advise you if a review of marking is worth it.

I was thinking of doing this but my schools told me its for AQA only, and I do OCR for all subjects, so if I request the scripts they can't be reviewed afterwards, or I can request scripts after they've been reviewed, so I think I have to go in a bit blind