Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Judicial review definition

What does Judicial review mean? Judicial review is the court process used to challenge the lawfulness of decisions, actions or omissions of public bodies (such as ministers, local authorities, regulators and tribunals), rather than to reconsider the merits. It is a supervisory jurisdiction developed mainly through case law, with procedural rules set by legislation and court rules. Across the UK and Ireland, typical grounds include illegality (error of law, acting beyond powers), irrationality/unreasonableness, procedural unfairness (including breach of natural justice and legitimate expectation), and, where engaged, proportionality under the European Convention on Human Rights. Common remedies are quashing, prohibiting and mandatory orders, declarations and injunctions; damages...

Judicial review: interested parties and interveners—status, joinder, Supreme Court practice and costs (England and Wales)

Published by a LexisNexis Public Law expert

Practice notes

Interested parties

In the context of judicial review, an interested party refers to any person—other than the claimant and defendant—who is directly affected by the claim. Where a judicial review claim is connected to proceedings in a court or a tribunal, every other party to those proceedings will qualify as an interested party in the review; eg if a defendant in a criminal case in the Magistrates or Crown Court brings a judicial review of a decision in that case, the prosecution must always be named as an interested party in the judicial review claim. A person is regarded as directly affected if they are affected without the intervention of any intermediate agency, that is, without the involvement of any intervening body. For example, in R v Rent Officer Service, ex parte Muldoon, a local housing authority’s decision not to pay a housing benefit was challenged. The Secretary of State was indirectly affected, because if the decision were quashed, the disputed benefit would be added to the subsidy paid to the local authority...

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Julia Marlow

Hogan Lovells

Julia advises on the interface between business and government. She works with clients on both sides of that interface, on the development and implementation of new government policies, legislation and regulation, and on judicial review challenges. Julia's clients operate in a range of industries, including energy, financial services, pharmaceuticals, telecoms and transport. Whether she is assisting clients in shaping policy or regulations that affect their business, or is advising public bodies on sound decision-making, Julia's goal is to achieve her client's objectives without having to go to court wherever possible. While judicial review can be a useful tool for making sure that all relevant matters are taken into account when government bodies are developing new policy or law, it can be expensive and time-consuming. However, litigation can often be avoided if businesses and government communicate constructively at the earliest possible stage in the...

Fraser Eccles

Hogan Lovells

Fraser is an Associate in Hogan Lovells' award winning Public Law & Policy team, helping businesses understand, change and challenge the regulatory frameworks they operate in. He assists clients in the public and private sectors, including in central government, on both contentious and advisory matters including administrative and public law, judicial review, freedom of information, EU law, commercial human rights and public affairs and policy.Fraser acts for claimants, defendants and interested parties in high-profile and complex judicial review and other statutory appeal proceedings. As part of his advisory practice, Fraser assists private sector clients to capitalise on opportunities and mitigate risks through their engagement with government decision-makers and helps public sector clients to make more robust policy decisions. Fraser began his career as a policy advisor at HM Treasury, advising on matters relating to tax policy, trade, and the UK’s exit from the European Union. ...

Web page updated on 21/05/2026

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