In a submission to the public consultation, prepared by law professor Andrew Tettenborn of Swansea University, the FSU claimed that the bill would be one of the most draconian constraints on free speech in the Western world.

[12] In Byline Times, Nafeez Ahmed said that Birkbeck College professor Eric Kaufmann, an advisor to the FSU, was behind Education Secretary Gavin Williamson's proposal to regulate free speech at English universities.

[13] Digital sociologists writing in Race & Class linked the Free Speech Union in a network analysis to thirteen other campaign groups sharing staff and members that were part of a "war on woke" and centered on Spiked.

[14] Other directors of the union include Douglas Murray, Inaya Folarin Iman, Radomir Tylecote of the Institute of Economic Affairs, Nigel Biggar, and Ian Rons.

The Legal Advisory Council of the FSU consists of sixteen lawyers, among them former High Court judge Sir Patrick Garland,[15] and law professors Andrew Tettenborn[16] and Raymond Wacks.

[18] The FSU Advisory Board includes former deputy leader of the Scottish National Party Jim Sillars and Tim Williams who was an advisor to Labour Prime Ministers Tony Blair and Gordon Brown.