ICAS do not offer appeals but can check all processes were carried out correctly by doing a procedural review.

If you would like to go ahead with this, please request via email to students@icas.com with the title Procedural Review in the subject line. Then in the email state the assessment you are wishing to be reviewed and date it was sat. 
 
More information can be found here https://www.icas.com/students/exam-information/exam-information-and-regulations