NDA’s - if someone has broken the law, surely it no longer stands? What’s the worse that can happen or am I being naive here
NDAs and injunctions are different things.
Let's assume we're an old rich purve and we've done something terrible to a junior employee.
We might start by asking her to sign an NDA for which we'll pay her, say, £50k. By signing it and taking the money, she agrees not to go to the police or take any other action. But the NDA only affects her, and she has to agree to it. She's free to ignore the money and not sign, although we've probably reminded her that a court trial is awful, it's her word against ours etc etc.
Unfortunately, we're becoming known for junior employees departing suddenly, and people are gossiping, and journalists think there is a story somewhere. They are starting to print stories which encourage this speculation, and the public are starting to stop spending money on our books and tickets for our shows as they think something is afoot.
So we go to the court and get an injunction. Our lawyer argues that the speculation is damaging, there is no evidence of wrongdoing (of course not, we've paid them all off with NDAs), and the injunction stops people talking. If they can't talk about it, then the victims remain isolated, happy (we assume) with their payoff and our assurances it was a one off. It allows us to maintain our public image, and everything continues as usual.
No one is stopped from going to the police, but using both makes it very unlikely, so we can continue our purve behaviour.