D C
I have had to move your post to it's own topic!
I'm afraid as you have been invited to attend an IUC we cannot offer advice at this time.
This has now become a legal matter and it would be inappropriate for us or any other online forum to offer you advice. You need to get face to face advice from a Trained Advisor and you should consult a solicitor about the interview to understand your rights.
Please be very careful about supplying information about your claim as you may inadvertently include details that may hurt your case.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems