1. Introduction
2. Radio and Optical Data
2.1. The ATESP 1.4 and 5 GHz Surveys
2.2. The Optical/Infrared DPS Survey
2.3. Additional Optical Imaging
2.4. Other Optical Information
3. Multi–Colour Analysis of DEEP1 DPS Data
3.1. Colour Catalogues
3.2. Photometric Redshifts
4. Optical Identification of the ATESP Radio Sources
4.1. Optical Identifications
4.2. Additional Identifications
5. Photometric Redshifts for the Identified ATESP Radio Sources
6. The ATESP–DEEP1 Source Properties
6.1. Redshift Distribution
6.2. Radio and Optical Luminosities
7. Nature of the mJy and sub-mJy Radio Population
8. Summary