London was the largest city in the Anglo-Norman empire, and its bishops were therefore figures of the utmost importance. The 250 acta recorded in this volume testify to their role in the development of episcopal government and its documentation. One of the most significant figures of the twelfth century was Bishop Gilbert Foliot (1163-1187), who tangled famously with Thomas Becket. The volume contains important additions and corrections to Morey & Brooke's edition of Foliot's correspondence and updates our understanding of the man and his acta in the light of the latest scholarship.