The University of London has a chancellor (a ceremonial post) and a vice-chancellor (equivalent to a managing director). All colleges have a chief academic as head, using a variety of titles. At University College London, the head is the "provost"; at King's College London the head is the "principal"; at Imperial College London the head was until recently called the rector, until this was split into a provost and president; and the London School of Economics is headed by a "director".