The dispute is that the Police didn't follow procedure by showing her the Home Office Circular depicting the jobs it would affect.
She wasn't drunk, she had a few drinks and the incident occured early on during the night.
She spent a night in the cells and was processed in the morning, so it wasn't a heat of the moment thing, or a clouding of judgement as she was stone cold sober and had the night to think about it, that's why she was so vocal about it affecting her job and the Police said it wouldn't.
The issue isn't about the bouncer, as she did bite him but about the way the Police lead her to believe that taking a caution would be acceptable and played it off as nothing.
It is her word against theirs, but that's what happened.
'Even a rescinded caution would show up on a crb check'
I'm lead to believe it wouldn't and have been researching past cases where rescinded cautions meant blank CRBS.
Sources:
http://www.swarb.co.uk/phpbb/viewtopic.php?t=5 151
and
http://www.dailymail.co.uk/news/article-397368 /Student-pincher-wins-appeal.html