Geotechnical Engineering Colchester City Centre, Colchester - Welcome to the Colchester City Centre Geotechnical Engineering Directory listing recommended geotechnical engineering companies in Colchester City Centre. It lists those who offer geotechnical engineering in Colchester City Centre, Colchester. Do you have a Colchester City Centre business? If so, why not advertise it on the Colchester City Centre Business Directory - IT'S FREE.