If you've fully met the exact conditions of your firm offer and exceeded them then you can use adjustment.(Original post by itsyrt)
What if you don't have an insurance choice and you get accepted into your firm? Can you go through adjustment and swap places without a clearing number or do you still have to ask the firm uni to be released into clearing?
Adjustment only lasts for 5 calendar days though. It's not a common route and doesn't give much opportunity to shop around and think about the options.
Is it a good idea?