Helen, Dione and Martha are all part of a CECAN team that has been developing guidance for evaluation practitioners and commissioners struggling with complex interventions – and particularly those working in complex policy areas. The guidance was requested by the government team of evaluators who are revising the Magenta Book (Cross government guidance on evaluation) with the idea of having an annex on complex evaluation ready for when this is published. Combining experience in evaluation, complex adaptive systems and system mapping, the CECAN team has set out a set of guidance to the features of complex adaptive systems that pose the biggest challenge to evaluators, and what steps can help in addressing these challenges. This includes issues related to how evaluations are commissioned and managed, as well as points to bear in mind when deciding which evaluation approaches and methods might be most useful. The webinar provides an overview of some of these insights. If you were unable to join the webinar, you can watch/listen to the session via our YouTube channel below. Dione and Helen have also kindly made their slides available for download*.