September 2019: Recommendation 1.4.12 on when to have a CT scan was updated to change warfarin to anticoagulants.
June 2017: Recommendations 1.2.8 and 1.4.12 were updated with cross-references to related NICE guidelines. An outdated research recommendation was stood down and removed.
Minor updates since publication
October 2019: A section heading was amended to match with the change made to recommendation 1.4.12 in September 2019. Recommendations 1.1.3 and 1.1.4 have been amended to remove warfarin as an example of an anticoagulant so it's clear it applies to all anticoagulants.