Academic dress of Imperial College London

[2][3] All hoods for first degrees are black, part lined with white watered silk, with a narrow purple velvet band.

Postgraduate masters students wear a black hood, fully lined with white watered silk, with a narrow purple velvet band.

[5] Using the Groves classification system, PhD, DEng and MD graduates wear a Cambridge doctors [d1] shape gown of purple cloth, with front facings of white watered silk with a 1" purple velvet ribbon ½" from outside edges of facings.

Research doctorate recipients wear a hat, which is a black velvet Tudor bonnet with purple cord and tassel.

Imperial DSc recipients wear a similar gown but with the sleeves lined with white watered silk and held back with purple twisted cords and buttons.