Academic dress of Durham University
The academic dress of Durham University has many similarities with that of other older British universities such as Oxford and Cambridge. Most colleges of Durham University insist on gowns being worn on formal occasions, including matriculation and formal halls (dinners); exceptions are Van Mildert, St Cuthbert's Society (matriculation and selected dinners only), Collingwood, Stephenson, St Aidans, and The College of St Hild and St Bede (matriculation only).
Source: Wikipedia — Academic dress of Durham University (CC BY-SA 4.0)