Freedom of expression and assembly

Freedom of expression and peaceful assembly are not marginal civil liberties. They are structural conditions of constitutional government. A constitution which permits elections but suppresses criticism, journalism, protest and collective political action is democratic only in form. In the Cambridge Part IA course, this topic therefore joins several earlier themes: parliamentary sovereignty, the rule of law, common law rights, the Human Rights Act 1998, and the relationship between courts and executive discretion.

The principal doctrinal framework is now supplied by Articles 10 and 11 of the European Convention on Human Rights, given domestic effect by the Human Rights Act. Article 10 protects the freedom to hold opinions and to receive and impart information and ideas. Article 11 protects peaceful assembly and association. Neither is absolute. Each permits restrictions which are prescribed by law, pursue a legitimate aim, and are necessary in a democratic society. Much of the law is therefore a law of justification: the state may interfere, but must explain why the interference is legally authorised, rationally connected to a proper aim, and proportionate.

The topic has a distinct constitutional character because protest often confronts the state at its most operational level: the police officer deciding whether to impose conditions, the minister seeking an injunction, the prosecutor charging aggravated trespass or obstruction, the local authority regulating demonstrations outside public buildings. These decisions are not usually grand constitutional moments. Yet they reveal whether constitutional rights operate only as rhetorical abstractions or as practical constraints on power.

Students should avoid two opposite errors. The first is to treat speech and assembly as American-style absolutes. English law has never done so. It has long accepted restrictions for public order, national security, reputation, privacy, crime prevention and the rights of others. The second error is to assume that because regulation is possible, rights add little. That is equally wrong. Since the Human Rights Act, and increasingly through common law constitutional reasoning, courts require a rights-sensitive assessment. In protest cases, especially after Ziegler, even criminal offences of general application may require a proportionality analysis before conviction.

For Tripos purposes, the strongest answers connect doctrine to constitutional theory. Why are expression and assembly specially protected? Is it because they promote truth, autonomy, democratic participation, or distrust of state power? Does proportionality give courts too much control over policing and public order, or too little? How should courts treat disruptive protest, especially where protest deliberately obstructs ordinary life? The best essays do not merely recite Article 10 and Article 11; they explain how those articles reshape the public law of dissent.

English constitutional history contains no single founding text equivalent to a First Amendment. Freedom of expression and assembly developed unevenly, through the decline of licensing, the jury’s role in seditious libel, the emergence of public meeting, the common law’s tolerance of lawful use of the highway, and later statutory controls on public order. The result is characteristically British: liberty is protected partly by negative residual freedom, partly by common law principle, and now substantially by Convention rights under the Human Rights Act.

Historically, the starting point was not a general right to political speech but the absence, after 1695, of prior licensing of the press. This did not mean that publishers were free from punishment. Seditious, blasphemous and obscene libels remained possible, and the state retained extensive means of repression. Yet the end of licensing mattered constitutionally because it shifted control from prior permission to subsequent legal responsibility. In Diceyan terms, liberty often appeared as the right to do whatever was not prohibited by law.

The history of assembly was similarly ambivalent. Public meetings, marches and demonstrations were indispensable to movements for parliamentary reform, trade unionism, women’s suffrage and later civil rights. But the state also deployed riot law, unlawful assembly doctrine, breach of the peace powers, and later statutory public order controls. The Peterloo massacre and nineteenth-century responses to Chartism remain reminders that the legal protection of political assembly was not generously conceded. It was contested in practice, often in the street before it was vindicated in court.

The common law traditionally treated the highway as a place for passage, not general public occupation. Yet in DPP v Jones the House of Lords accepted that reasonable peaceful assembly on the highway could be lawful provided it did not unreasonably obstruct the primary right of passage. That decision is historically important because it rejects a narrow proprietary conception of public space. It recognises that streets and highways are also forums of civic life.

The twentieth century brought increasingly detailed statutory regulation. The Public Order Act 1936 responded to political violence and paramilitary demonstrations. The Public Order Act 1986 created the modern framework for processions, assemblies and public order offences. More recent legislation, including the Police, Crime, Sentencing and Courts Act 2022 and the Public Order Act 2023, has expanded the state’s capacity to regulate disruptive protest. These developments reflect anxiety about protest tactics such as road-blocking, tunnelling, locking-on and disruption of infrastructure.

The Human Rights Act 1998 changed the legal grammar. Before 2000, English law could protect speech and protest, but usually by asking whether the state had lawful authority to interfere. After the HRA, the question is also whether interference with Articles 10 and 11 is justified. This does not abolish parliamentary sovereignty. Parliament may legislate restrictively, subject to sections 3 and 4 HRA. But the Act makes rights part of ordinary adjudication, including criminal trials and judicial review. The historical arc is therefore from residual liberty, through common law recognition, to a justificatory constitutionalism in which state restrictions require reasons.

The first principle is that freedom of expression has both individual and constitutional dimensions. It protects personal self-development, moral agency and the ability to form and communicate opinions. But it also sustains democratic accountability. Voters cannot judge government, Parliament, courts, police or corporations without access to information and criticism. Political expression is therefore normally at the core of Article 10 protection. Commercial expression, artistic expression, journalistic investigation, religious speech and offensive speech may also be protected, though the intensity of protection may vary with context.

The second principle is that freedom of assembly is not merely a derivative form of speech. Article 11 protects the collective character of political action. Demonstration communicates in ways that isolated speech cannot: numbers, presence, disruption, symbolism and solidarity are part of the message. Assembly is especially important for those without regular access to Parliament, media or wealth. For that reason, a constitutional analysis of protest should not reduce assembly to inconvenience. A march, sit-in or vigil may interfere with ordinary use of public space precisely because it seeks to make a public claim visible.

The third principle is peacefulness. Article 11 protects peaceful assembly. Violence, threats of violence and serious disorder may fall outside its protection, or justify restrictions under Article 11(2). But peaceful does not mean silent, passive or incapable of causing disruption. A protest may be noisy, inconvenient and obstructive while remaining peaceful. This point is essential in problem questions. The mere fact of obstruction or annoyance does not automatically remove Article 10 or 11 protection.

The case law shows a movement from residual liberty to express rights adjudication. DPP v Jones is the indispensable starting point for assembly in public space. The House of Lords held that the public’s right to use the highway is not confined to passage narrowly understood. Peaceful and reasonable assembly may be lawful if it does not amount to unreasonable obstruction. The case matters because it constitutionalises ordinary public space: the street is not merely an instrument of transport but a forum for civic communication.

R v Shayler concerns expression and national security. A former security service officer was prosecuted after disclosing information. The House of Lords accepted that Article 10 was engaged but upheld restrictions justified by national security and the statutory regime. It is a reminder that expression rights are strongest in political debate but may be restricted where confidentiality, security and official secrets are implicated. The point for exams is not that national security always wins, but that courts will attach substantial weight to it.

R (ProLife Alliance) v BBC concerns broadcast regulation and political expression. The refusal to broadcast graphic anti-abortion material engaged Article 10. The House of Lords divided, reflecting the difficulty of reconciling political speech, broadcasting standards and offence to viewers. The case is useful because it shows that expression does not lose protection because it is disturbing, but the medium and audience matter.

Austin v Commissioner of Police concerns containment, or kettling. The House of Lords held that police containment during disorder did not necessarily amount to deprivation of liberty under Article 5, provided it was used in good faith, proportionately and for no longer than reasonably necessary. Although Article 5 is the direct right, the case is important for assembly because containment can effectively suppress protest. It illustrates the courts’ willingness to consider operational policing realities, while still requiring necessity.

Laporte is a leading case on pre-emptive policing. Coaches carrying protesters were stopped, searched and escorted back to London to prevent anticipated disorder at an airbase. The House of Lords held the police action unlawful. The anticipated breach of the peace was not sufficiently imminent to justify such a drastic interference. Laporte is a strong authority for the proposition that preventive public order powers must not be used on speculative grounds.

Animal Defenders International concerns political advertising. The statutory ban on paid political advertising was upheld despite its interference with Article 10. The case is central to debates about general measures and democratic equality. Parliament had adopted a broad rule to prevent wealthy interests distorting political debate. The courts accepted the scheme as proportionate, a conclusion later upheld in Strasbourg. The case illustrates deference where Parliament has carefully considered a rights-sensitive problem.

Ziegler is now essential. Protesters obstructed access to an arms fair and were charged with wilful obstruction of the highway. The Supreme Court held that conviction would be an interference with Articles 10 and 11 and that courts must assess whether conviction is proportionate. Ziegler does not create a general protest defence. It requires a structured inquiry into proportionality. Its practical significance is large: even apparently ordinary obstruction cases may require constitutional analysis.

Together these cases reveal the tension at the centre of the topic. Courts recognise the special status of protest and speech, but they do not confer immunity from law. They require legality, imminence where preventive powers are used, careful attention to factual context, and a proportionality assessment where criminal conviction or police control interferes with Convention rights.

See practice questions section below.

See further reading section below.