The following paper was first published in Caesaromagus No. 120, the journal of the Essex Numismatic Society. This was the occasion of the BANS 2016 Congress hosted by the Essex N.S. in their 50th anniversary year, and the issue incorporated the Congress brochure. Because the coinage described applies to the much larger North Thames region beyond Essex, it was felt it might be of interest to reproduce it here. It has been slightly amended to take into account new research and recent discoveries.