OR/13/001 Summary
This report is the published product of a regional GSI3D model of the Colchester area of southern East Anglia and north Essex. The model was assembled between 2006-08 concurrently with surveying of the parts of the area within the Colchester and Brightlingsea 1:50 000 mapsheets (BGS, 2010) by S J Mathers, the TL92 sheet was appended in 2011.