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Court interventions by MPs: constitution in action, or under attack?

MPs' appearances before the courts are not just reserved for arguments about Brexit, say Ned Beale & Rebecca Lawrence 
  • There are very good reasons why MPs and all-party parliamentary groups would want to become involved in litigation, both by way of judicial review and interventions as to the interpretation of legislation.
  • However, there is a number of issues that MPs—and their lawyers—should bear in mind when considering an intervention.

Former Prime Minister Sir John Major’s warning in July that he would seek judicial review of any decision by the government to suspend Parliament to force a no-deal Brexit gave rise to a spate of Brexit-related cases. However, Brexit aside, recent cases—including a recent intervention by MPs in a Supreme Court hearing on a principle of company law—show MPs using judicial processes to influence government and legislation. This article discusses the Supreme Court intervention and other claims brought by MPs to explore legal and practical considerations around politicians' interventions in legal proceedings.

Background

The Supreme Court hearing

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MOVERS & SHAKERS

Kingsley Napley—Claire Green

Kingsley Napley—Claire Green

Firm announces appointment of chief legal officer

Weightmans—Emma Eccles & Mark Woodall

Weightmans—Emma Eccles & Mark Woodall

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Gilson Gray—Linda Pope

Gilson Gray—Linda Pope

Partner joins family law team inLondon

NEWS
The landmark Supreme Court’s decision in Johnson v FirstRand Bank Ltd—along with Rukhadze v Recovery Partners—redefine fiduciary duties in commercial fraud. Writing in NLJ this week, Mary Young of Kingsley Napley analyses the implications of the rulings
Barristers Ben Keith of 5 St Andrew’s Hill and Rhys Davies of Temple Garden Chambers use the arrest of Simon Leviev—the so-called Tinder Swindler—to explore the realities of Interpol red notices, in this week's NLJ
Mazur v Charles Russell Speechlys [2025] has upended assumptions about who may conduct litigation, warn Kevin Latham and Fraser Barnstaple of Kings Chambers in this week's NLJ. But is it as catastrophic as first feared?
Lord Sales has been appointed to become the Deputy President of the Supreme Court after Lord Hodge retires at the end of the year
Limited liability partnerships (LLPs) are reportedly in the firing line in Chancellor Rachel Reeves upcoming Autumn budget
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