Free speech within the law is an essential precondition of thriving universities. Free speech underpins diversity of thought, allows students to develop the ability to think critically, and exposes them to new ideas. I held a free speech summit on 3 May 2018. At the summit, university leaders and regulators agreed to develop a single piece of guidance to help the higher education sector promote free speech and open debate. The guidance is expected to be published in the autumn.