There is a safeguarding team on-site who you can reach out to.
The team members can be found here: https://www.tokonatsu.org.uk/anti-harassment/#designated-safeguarding-personnel.
Once you are safe, find a staff member (yellow badge) and ask for one of the safeguarding team.
In the event that no safeguarding member is reachable, there is a contact number on the above page that you can use to arrange a meeting.
You can also anonymously report harassment online using the official form, found at https://www.tokonatsu.org.uk/anti-harassment/report/.