Links to the geographic tribal regions  that issued coins are listed below:

Kent region: Cantiaci 
Southern region: Regini & Atrebates, Regini, Belgae, Berkshire, Vectuarii
East Anglian region: Iceni
North-eastern region: Corieltavi
Western region: Dobunni, East Wiltshire
South-western region: Durotriges
North Thames region: Eastern, Trinovantes, Catuvellauni, Catuvellauni & Trinovantes
Gallic Imports

   Map : "Ancient British Coins", by Elizabeth Cottam, Philip de Jersey, Chris Rudd & John Sills, 2010