All geophysical surveys should aim for a report that details the data, their processing and interpretation. Reports should be written in accordance with accepted guidelines. In Britain, it is recommended to use those laid out by English Heritage (David et al. 2008). A report will very rarely contain all the information that has been collected and analysed in a geophysical survey project. It is hence essential to understand that although the report is an important product derived from the geophysical work, it is not the sole outcome of an investigation and is not sufficient on its own to form the Archive.