Britain's debate over free speech is entering a more uncomfortable phase, with new polling suggesting that public confidence in the government's protection of freedom of expression is falling.

A poll commissioned by civil liberties group Liberty found that 51% of Britons believe their confidence in the UK Government to protect free speech has worsened over the past two years, while only 10% believe it has improved.

The survey also found concerns about understanding the boundaries of lawful speech. Almost four in ten respondents said their understanding of what can legally be said has deteriorated, while 42% said they felt less confident about expressing controversial political opinions without facing legal consequences.

This matters because a healthy democracy needs citizens to understand both their rights and their responsibilities. Laws can legitimately restrict threats, harassment and serious criminal behaviour, but unclear boundaries can make ordinary people reluctant to participate in public debate.

The issue is particularly relevant as Britain continues to debate protest restrictions, online speech and the responsibilities of social-media platforms.

The challenge for government is not simply to defend free speech in principle, but to make the rules understandable enough that people know where lawful expression ends and criminal conduct begins.

That distinction could become increasingly important as political arguments become more heated both online and in public spaces.