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Leon Glenister

Leon Glenister


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Leon’s practice spans Chambers’ practice areas, with a particular focus on Public and Planning Law. His cases in 2018 have included the Alfie Evans litigation, the challenge to the NHS Accountable Care Organisation contract and the challenge to the UNITE leadership election. He has been appointed to the Attorney General's C Panel of Counsel. 

Leon is also a tutor in Administrative Law at the Faculty of Law, University of Cambridge. He is also a contributing author to ‘Children’s Social Care Law’ (LAG, 2018).

Away from law, he is a Governor of Dr Challoner’s Grammar School.

For detail on his practice areas:

Directory and other quotes

“a rising star”; “strong advocacy”; “never fazed by anything, he is appreciated by clients for his calming influence”; “approachable and always works well with clients and witnesses”; “he’s diligent, very hard-working, knowledgeable about the law and someone who has a very good way with clients” Chambers & Partners 2018

“a rising star”, “his submissions are fantastic and his advocacy skills are brilliant” Chambers & Partners 2017

“brainy” The Guardian

Recent cases

Leon is regularly instructed in high profile public and planning law litigation. His work over the last two years has included:

  • Acting for the Secretary of State in a judicial review of the Planning Inspectorate’s decision, following the quashing of a planning appeal dealt with by Inquiry, to determine the appeal by written exchange rather than by re-opening the Inquiry. The Court gave guidance on how such decisions should be taken (R (North Norfolk District Council) v SSHCLG [2018] EWHC 2076 (Admin)).

  • Acting in a challenge to a decision by the Office of the Independent Adjudicator to refuse jurisdiction to hear a complaint. The Administrative Court’s decision, to the effect that matters of jurisdiction are for the Court rather than rationality review, has implications for other ombudsman and adjudicator schemes (R (B) v Office of the Independent Adjudicator [2018] EWHC 1971 (Admin)).

  • Acting in the Court of Appeal, Supreme Court and European Court of Human Rights in the initial appeal of the declaration that removal of Alfie Evans’ life support was in his best interests (E (A Child) [2018] EWCA Civ 550), as widely reported in the national and international press, see BBC and the Guardian.

  • Challenging NHS England’s Accountable Care Organisation (ACO) draft contract as being contrary to the Health and Social Care Act 2012 (R (999 Call for the NHS) v NHS England [2018] EWHC 1067 (Admin)), as reported in the Guardian  and the Health Service Journal.

  • Acting in what is now the leading case on whether a defective enforcement notice issued by a local authority is a nullity (Oates v SSCLG [2017] EWHC 2716 (Admin)).

  • Challenging Oxfordshire CCG’s decision to reconfigure services at the Horton General Hospital (R (Cherwell DC) v Oxfordshire CCG [2017] EWHC 3349 (Admin)), as reported on the BBC. An appeal has been made to the Court of Appeal.

  • Challenging a well-known school’s decision to withdraw admission of a student (R (LH) v X School [2017] EWHC 1985 (Admin)).

  • Acting for the Registrar General before Sir James Munby in relation to the registration of a birth following the use of donor sperm (Application K [2017] EWHC 50 (Fam)).

  • Challenging the decision of Lambeth Council to regenerate Cressingham Gardens Estate (R (Plant) v Lambeth LBC [2016] EWHC 3324 (Admin)R (Bokrosova) v LB Lambeth [2015] EWHC 3386 (Admin)) as reported in the Guardian.

  • Instructed in relation to a challenge of the Mental Health Tribunal decision to move Peter Coonan from Broadmoor back to prison, as reported widely in the national press, see BBC and the Guardian.

  • Acting in the Detained Asylum Casework litigation in the Court of Appeal (R (TH) v SSHD [2016] EWCA Civ 815).