During induction week, all students attend their Matriculation ceremony in Durham Cathedral. An undergraduate gown is optional for the Matriculation ceremony.
Please note that students of St Cuthbert's Society are not required to wear gowns to formal dinners held at the Society, (gowns have not been compulsory at Cuths since the early 1970's). But you should also note that it is compulsory to wear a gown at formal dinners in a number of other colleges, so it may be useful to have one for the occasions when you are invited to dine elsewhere.
Your Student ID/Unique PIN is the nine-digit number beginning 000 which appears on correspondence sent to you by the University and the College.