This article examines activism to address staff-to-student sexual misconduct in higher education in the UK from our perspective as founders and members of the research and lobby organisation The 1752 Group. We argue that in order to tackle staff sexual misconduct in higher education, the problem has first to be made visible. We theorise this as ‘slow activism’ and outline the activities that we and others have been engaged in towards this end: conducting research; using complaints processes within institutions; naming the experiences of staff sexual misconduct and/or institutions and perpetrators; and carrying out discipline-led and sector-level initiatives.