This thesis considers the Iron Age coinages found in hoards within a particular study area in northern East Anglia. The study area was widely defined to attempt to capture all the coins considered by previous scholars to belong to the Iron Age tribe, the Iceni. Other coins of the Iceni outside the study area found in hoards are also considered. The historical context and previous numismatic research on these coins is reviewed. All coin hoards within the study area are fully described and reviewed, and two hoards are presented as detailed case studies, including a die study on the largest number of Iron Age hoard coins yet undertaken. A classification of the coin series is given, with each coin type fully described, illustrated, and photographed. The distribution of the coin hoards within and outside the study area is considered, results discussed and conclusions drawn. A chronology is suggested for the coin types and for the deposition of the hoards. The manufacture and minting of the coins is discussed and suggestions for mint sites given. Finally, a number of detailed conclusions are drawn.