If you have a Support Plan one of the recommended accommodations will be that extensions to deadlines should be allowed on request wherever possible. Therefore, you do not need to complete an extenuating circumstances form.
Instead you need to get the approval of the designated member of School staff on this form - Coursework Extension Request for students with a Support Plan and submit it to a Service Centre. You do not need to include any supporting documentation. This form can only be used for one extension per assessment and must be submitted before the original deadline.
Submission can be in person or to firstname.lastname@example.org
If you have already been granted an extension on the basis of a Support Plan but your circumstances change, such that you would like to request a further extension to the already extended deadline, please follow the extenuating circumstances procedure.