Navigate to your inspection on your online dashboard > click on the Share History tab:
Under the Manage Report Links section, you will be able to see the specific links that were sent out to each contact for this report.
If you need to revoke access to a report, click on the green tick under the "Available" tab for that specific contact. Once you click on this, the icon will change to red:
This will revoke the access of this report link for this contact.