The recently launched KTH Guide to scientific writing in English emerged from the many discussions between teachers in Language and Communication and the wider KTH scientific writing community - students, lecturers and researchers - on the nature of effective scientific writing. As a result of these origins, the Guide is rooted in typical writing genres at KTH, and it draws on examples of these to provide guidance on the areas of sentence structure, punctuation, text flow and scientific style. Much of the focus in the Guide is on helping writers to make more informed choices, rather than simply follow rules. We hope to encourage them to explore their own preferences, and thus develop their own individual academic voice.