Arms: Murrey within an Orle of eight Crosses crosslet Argent a Lion rampant Or holding in the forepaws a Book bound Azure the spine and the edges of the pages Gold.

These arms were granted to the Lewes Old Grammar School Trust for the use of the School on 25 October 2012, precisely five hundred years after the date of probate of the will of Agnes Morley whose bequest to the free grammar school at Southover-next-Lewes is the earliest mention of that body which later became Lewes Grammar School.