In this presentation, aimed at students in engineering, science and technology, I present some personal thoughts on what is expected in a technical report. Aimed particularly at students about to write their first lab report, it also contains useful information for students who need to write a dissertation or a software design document. It relects what I like to see in a report when I am marking it, but some of the principles are general I think. Within the constraints of the medium, I have also tried to present this it in much the same way that I would expect a report to be presented. Comments welcome.