The Policy Exchange proposals that are referred to here are these: 
I can’t see how any of these affect the issue of who gets invited by private student groups to address them.
Indeed, requiring student groups (or student unions) to invite speakers they don’t want (or no longer want) to address them would itself be an interference with free speech (which includes the right not to hear from people you don’t want to).
And it would be silly in practice: as any lecturer knows, you can’t force students to turn up and listen to speakers they don’t want to hear.
See comment here: none of the proposals deal with the scenarios discussed.
