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Chambers of Paul Brown QC and Rupert Warren QC.

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Jacqueline Lean

Work 020 7430 1221
Landmark Chambers (Chambers of Paul Brown QC and Rupert Warren QC.)


Jacqueline specialises in property, planning and public law (including local government and ratings) as well as environmental law matters related to those areas of practice. Jacqueline’s cross-discipline practice is illustrated (inter alia) by her instruction for the Department for Transport in respect of High Speed Two (both in litigation and as part of the team promoting the Bill through Parliament) and in Fish Legal v Information Commissioner [2015] UKUT 0052 (AAC) in which she was instructed as junior counsel (to Tom de la Mare QC) for the water companies, drawing on both her environmental and property law expertise. Property: Jacqueline’s property work encompasses the full range of landlord and tenant, including leasehold enfranchisement, and real property disputes. She has appeared before the High Court, County Court, First-tier Tribunal (Property Chamber) and LVT, with recent High Court work including an emergency injunction to restrain a rave and a claim for possession (and associated injunctions) against members of the Occupy movement. Recent First-tier Tribunal work includes applications to register rights of way raising issues of abandonment and estoppel, and advising a lender in an application to rectify the register to alter the proprietor and remove the registered charge. She has significant experience in mortgage disputes and rights of way, and regularly advises on cases involving planning and/or environmental issues. She has a particular interest (and experience) in cases involving protestors, and applications for pre-emptive relief, both for private landowners and public authorities. Planning: Jacqueline was part of the team of Landmark counsel instructed by the DfT to defend a number of challenges to the Government’s decision in January 2012 to seek powers to construct and operate HS2 Phase 1 by means of Hybrid Bill: R (Buckinghamshire CC & ors ) v Secretary of Statement for Transport [2013] EWHC 481 (Admin), [2014] UKSC 3, and the safeguarding directions for Phase 1: HS2 Action Alliance v Secretary of State for Transport [2014] EWCA 1579. She is currently instructed as part of the team of Counsel promoting the Bill through Parliament. Jacqueline’s planning work also encompasses advertising appeals, issues arising under the Highways Act 1980, advising on the Use Classes Order (including, recently, Classes C2/C3), and compulsory purchase and compensation. Inquiry work has included appeals raising issues in respect of waste, flood risk, noise and mobile homes. Recent court work includes R (Matthews) v Secretary of State for Communities and Local Government [2014] EWHC 1299 (Admin) and Trail Riders Fellowship v Secretary of State for Environment, Food and Rural Affairs [2015] EWHC 85 (Admin). Public: Jacqueline undertakes a range of public law work, primarily for local government and central government. Recent local government work includes R (Gallastegui) v Westminster City Council [2012] EWHC 1123 (Admin), [2013] EWCA Civ 28 (challenge to the introduction of provisions of the PRSA 2011 relating to the power to require removal of tents and other equipment from designated areas in Parliament Square) and R (Hemming) v Westminster City Council [2012] EWHC 1260 (Admin) / [2013] EWCA Civ 591, (appeal heard by the Supreme Court in January 2015) (both with Nathalie Lieven QC). She regularly appears in the High Court, acting for a number of Government department, with cases of note including R(on the application of Harrow Community Support Ltd) v Secretary of State for Defence [2012] EWHC 1921 (Admin) (with David Forsdick); Jaytee (Rainton) LLP & ors v Secretary of State for Communities and Local Government [2013] EWHC 2835 (Admin) (with Tim Buley) and R (on the application of Kumar) v Secretary of State for the Home Department [2014] EWHC 644 (Admin). She is also currently instructed, with Nathalie Lieven QC and Declan O’Callaghan, for the Appellant, GS, in GS (Article 3: Health Cases: India) [2012] UKUT 397 (IAC), which appeal was recently dismissed by the Court of Appeal: [2015] EWCA Civ 40. She was appointed to the Attorney General’s C Panel of Junior Counsel to the Crown in April 2012.


Called 2007, Gray’s Inn. Attorney General’s C Panel of Junior Counsel to the Crown (April 2012)




Clare College, Cambridge (BA(Hon) Law 2005 (MA 2009), University of Chicago Law School (LL.M 2006).

London Bar

Administrative and public law (including local government)

Within: Leading Juniors

Jacqueline Lean - Landmark ChambersA resolute advocate, quiet in her courtroom demeanor but steely in determination.

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Within: Leading Juniors

Jacqueline Lean - Landmark ChambersThe complete advocate: she has a powerful intellect and a lightness of touch that makes her first on the team sheet.

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