Legal Case Summary
Attorney General v PYA Quarries [1957] 2 QB 169
Nuisance – Public Nuisance – Indiscriminate Effect
Facts
The defendants operated a quarry and used a blasting technique which emitted large quantities of dust and noise, as well as causing vibrations which interfered with the enjoyment of land for many individuals in the area. The claimants sought an injunction preventing the continuation of a public nuisance as a result. The defendant’s alleged that what was being carried out was in fact a private nuisance which effected only those in the area and that they were therefore not bound by the injunction prohibiting ‘public nuisance’ as a result.
Issues
Were the defendant’s actions a private or public nuisance? What was the distinguishing feature between a private and public nuisance and at which point did a private nuisance become public in nature?
Decision/Outcome
The blasting operation was capable of constituting a public nuisance and the injunction could be granted to prevent it. Whilst it was difficult to precisely define the difference between a public and a private nuisance, a public nuisance could be one which materially affected the reasonable comfort or convenience of a class of Her Majesty’s subjects. What constitutes a ‘class’ of people within a neighbourhood depends on the facts of any particular case and it is impossible to define the precise number of individuals necessarily effected for them to be considered a ‘class’. Neither do all individuals within the class have to be personally affected by the nuisance, as long as a representative cross section have been so effected. A public nuisance is so indiscriminate in its effect that it could not be reasonable to expect one person to take proceedings on their own to stop it. Instead, it was the responsibility of the community at large, and that was what had occurred in this case. As such, the injunction was granted.
Updated 19 March 2026
This case summary accurately states the legal principles established in Attorney General v PYA Quarries [1957] 2 QB 169, which remains good law. The distinction between public and private nuisance described in the article, including the ‘class of Her Majesty’s subjects’ test and the indiscriminate effect requirement, continues to be cited and applied by the courts.
Readers should be aware of one significant subsequent development. The criminalisation of public nuisance was placed on a statutory footing by the Police, Crime, Sentencing and Courts Act 2022, which created a statutory offence of public nuisance (section 78), replacing the common law criminal offence. However, the civil law principles established in PYA Quarries — which is what this article is primarily concerned with — remain unaffected by this change. The common law definition of public nuisance, as articulated in this case, continues to underpin both civil claims and the interpretation of the statutory offence. The article remains accurate for the purposes for which it is written.
