Messent holds a Master of Arts from the University of Cambridge. Cambridge is one of the oldest universities in the English-speaking world and is organized as a collegiate university, in which teaching and student life are shared between the central university and its autonomous colleges.
His admission to the bar in England in 1975 is his documented professional qualification and marks the start of his legal career.
Andrew Messent was admitted to the bar in England in 1975. He subsequently worked as a partner of Ingledew, Brown, Bennison & Garrett, a London law firm whose practice includes maritime and international trade matters.
The firm's history reaches back to provincial and London practices of the late nineteenth and early twentieth centuries. The Cardiff solicitors Ingledew & Sons, established by J. P. Ingledew, were closely linked with a London office; by 1934 the London practice traded as Ingledew Sons & Brown from 78 Leadenhall Street, and it later appeared under the name Ingledew Brown Bennison & Garrett.
A partner shares in the ownership and management of a law partnership in England. Messent's documented role with the firm is that of partner, and the firm's office in later years was at International House, 26 Creechurch Lane, in London.
