Available from the 24th August at the website of the NHSE Neurological Conditions Specialist Collection. The annual evidence update is based on a systematic literature search on Headache which identified the high level evidence published since the date of the last Headache AEU (in 2008), including guidelines, systematic reviews, health technology assessments and economic evaluations. Leading headache and migraine experts from around the UK have read and appraised these for their validity and relevance to the busy clinician.