For any scheduled online exams, the extra time will not show on your timetable however it will have been applied in the system (i.e. ExamSys or Moodle) and will be displayed when you log in on the day of your exam.
In-person exams will include your extra time on your exam timetable. If your extra time has not been added for your in-person exams, please contact the Exams Office here (select '01c. Exams' from the drop-down list).