The offence is 'either way', so it can be heard in a Magistrates Court or passed up to the Crown Court. (All but the most minor offences within this category seem to go to the Crown Court).
Court rolls (showing the basic details of all matters that come before them) are public documents but getting access to them doesn't always seem to be easy. (Similar questions here in the past have had answers from some people who've had success in just turning up at the court and asking to see them - or even simply phoning up and asking about case details - but others seem to have been met with a minefield of bureaucracy).
An initial phone call to the relevant court might be the best way to start:
https://courttribunalfinder.service.gov.uk/search/
(Once you've found the listing for the relevant court you need to click on 'More details' to find the phone number).
However you seem to be going about this the wrong way. If there are concerns over child protection issues the court needs to know about them so that an order can be made prohibiting the offender from certain actions (such as being in the company of children or going within half a mile of certain addresses). So you ought to be speaking to someone
before the case gets to court. Phone your local police force and ask to speak to a member of the Public Protection team.