Colonia Camulodunum (Colchester)

This is possibly the oldest Roman town in Britain, and was reportedly the first capital before London.  It was one of the three largest and most important towns on the island, with its offical name being Colonia Claudia Victricensis.  The probable Civitate for the Trinovantes, the city was sacked in the Boudabrican revolt and the inhabitants massacred.

http://www.roman-britain.org/places/camulodunum.htm

http://en.wikipedia.org/wiki/Camulodunum