https://www.slab.org.uk/faqs/will-slab-tell-the-applicant-about-my-representations/
If possible, out of fairness to the applicant, we need to discuss your views with them.
If there is an important reason why you do not wish us to do so, please tell us - but this may mean we will not be able to investigate your representations fully.
When you write to us please state clearly whether you give permission for us to show them to the applicant.
We may wish to investigate further, and ask you for more information.