This really is the crux of the matter. How important is the presumption of innocence on an acquittal? There are people who are acquitted who in all likelihood did commit the offence for which they were accused. What do we do with that possibility and the risk of offending in the future?
@Dis86 is suggesting that we should do nothing with this. The judged rule the other end of the spectrum saying it should be disclosed for certain occupations as this could be key to safeguarding children.
The issue is that the information disclosed is nuanced and the people receiving the disclosure are not likely to understand or have access to everything to make an informed decision, or perhaps even have the appetite to have any level of risk in that decision making process.
It all comes down to who manages that risk. At the moment it's down to employers who have no inclination to manage a risk and would prefer to avoid it. This clearly does disadvantage someone who could be totally innocent. The police don't want to not disclose the information in case it does prevent harm to vulnerable people (children).
So what's the answer? I haven't a clue. This is a difficult ethical question.