Diploma of Imperial College
The Diploma of the Imperial College (DIC) is an academic certificate awarded by Imperial College London to its doctoral and master's students upon graduation. DIC is a post-nominal award that is issued by Imperial College London to postgraduate students who successfully complete the PhD, EngD, MD(Res), MSc, MRes, MBA, MPH, MEd or MPhil degree.
Source: Wikipedia — Diploma of Imperial College (CC BY-SA 4.0)