In the name of safeguarding and security, British counter-terrorism legislation is becoming increasingly restrictive of expression that is deemed to support non-violent extremism. This restriction of expression seems counter-intuitive to some of our most cherished British liberal values. Researcher Khadijah Elshayyal asks: Can we justify the restriction of free speech and talk about promoting British values at the same time? Is restrictive legislation the best approach to tackling the threat of radicalisation in our communities? And, come to that, when did radical become such a dirty word?