020 7242 4986 or  0333 240 0591 London  |  Birmingham  |  Cardiff
Philip Kolvin

Dr Christina Lienen

020 7242 4986
Daniel Gatt

Christina accepts instructions in all areas of Chambers' work, both from professional clients and on a public access basis.

An expert on common law constitutional rights, she has a particular interest in Public Law & Judicial Review and Information Law. During pupillage, she also gained experience in Planning and Environment, Housing, Licensing, Health and Social Care and Commercial and Regulatory Law.

Christina was called to the Bar in 2019 by Middle Temple as a Queen Mother Scholar and Jules Thorn Scholar. She holds a PhD in Constitutional Law from University College London (funded by the LAHP and the Modern Law Review), where she also held a position as Teaching Fellow in Public Law. Her academic work on common law constitutional rights has been published in leading peer-reviewed journals, including Public Law and Legal Studies. Her book "Shaped by the Nuanced Constitution: A Critique of Common Law Constitutional Rights" will be published by Hart Publishing in 2022.

During her pupillage, Christina was supervised by Estelle Dehon, Philip Coppel QC and Dean Underwood. As such, she gained experience across a broad range of areas. This included work in the fields of information and data protection law, human rights law, judicial review, planning law, housing law (including licensing), commercial law and antisocial-behaviour law. She completed a wide range of advisory work, drafted various sets of pleadings, assisted in a planning inquiry and was involved in negotiations. Christina has also accepted criminal law instructions and recently qualified as a mediator.

Alongside her legal practice, Christina is a Visiting Lecturer at the University of Law where she teaches Civil Litigation on the BPC and Public Law on the MA programme once a week.

Christina regularly provides pro bono advice through Advocate and the Brixton Advice Centre. She welcomes pro bono enquiries, especially those concerned with human/constitutional rights, ethnic inequality/discrimination, and the environment.

Prior to obtaining her doctorate, Christina read for an MJur at the University of Oxford (Distinction), where she was awarded the Clifford Chance Proxime Accessit Prize for being ranked second in her year. She also holds an LL.B. (Distinction) from the University of Maastricht, BPTC from City, University of London (Very Competent) and a GDL from the University of Law (Pass: Exempt).


Information and data protection law

  • Advised a local authority on liability and quantum regarding a data protection breach under the DPA and GDPR.
  • Drafted an advice on a local authority’s data protection law obligations in the context of a selective licensing scheme consultation, focusing on the GDPR’s “purpose limitation”.

  • Drafted a reply in the First-tier Tribunal in the context of an appeal concerning various exemptions under the Freedom of Information Act.

  • Drafted an advice on inter-jurisdictional processor/controller responsibilities.

  • Advised on the regulatory framework and drafted a GDPR compliant website privacy notice for an advice centre on a pro bono basis.


Zoom webinar - GDPR 2 years on - Lessons learned and practical tips for compliance

The Cornerstone Information Law team has been at the forefront of advising private and public sector clients in overcoming the challenges posed by GDPR implementation. Our experience suggests that there remain....


  • Assisted a local authority with, and drafted a skeleton argument for, an application for an extension of time for filing and serving its summary grounds of defence in judicial review proceedings.

• Drafted a skeleton argument opposing renewal of a judicial review human rights challenge under the Gender Recognition Act 2004.

• Prepared an info sheet for XR members on how to bring a claim against the police for harm or injury caused during an arrest.

• Contributed to an advice to the Equality and Human Rights Commission on their draft submissions to the UN Human Rights Committee concerning the UK's compliance with the rights to privacy, freedom of expression and association under the ICCPR.

• Prepared research notes and reviewed statements of case for a public sector equality duty judicial review defence.

Anti-social behaviour law

  • Successfully obtained an ASB injunction, including an exclusion order, for a local authority.
  • Advised a local authority on the merits of applying for a further extension of an ASB Injunction running in parallel to possession proceedings.
  • Wrote an advice for a local authority client on the most appropriate options to stop illegal raves from recurring.

  • Drafted an advice on the options available to a local authority in the context of residential anti-social behaviour, exploring both informal measures (ABCs, community resolutions, mediation and warnings) and formal measures (injunctions, criminal behaviour orders, community protection notices and closures order under the Anti-social Behaviour, Crime and Policing Act 2014 and forfeiture).


Planning and Environment law

  • Junior on a two-week planning inquiry involving heritage, noise and transport evidence (led by Michael Bedford QC).
  • Assisted with a rebuttal to the alleged shortcomings of the sustainability appraisal by a local authority in the context of the adoption of a local plan.
  • Marshalled Mr Justice Holgate at a statutory appeal and a judicial review at the High Court.

  • Drafted a judicial review pre-action protocol letter, statement of facts and grounds and a reply in a judicial review application challenging the grant of planning. permission on EU law, Green Belt, reasons and climate change grounds.

  • Drafted a skeleton argument for a without notice planning enforcement injunction hearing.

  • Drafted part of a planning closing statement, focusing on heritage aspects.


Contract/tort/commercial law

  • Drafted Particulars of Claim in a breach of contract and unjust enrichment matter, which involved agency law.

  • Drafted a skeleton argument for a summary application hearing in a commercial dispute involving breach of contract, breach of fiduciary duties and an unlawful means conspiracy.

  • Advised a pro bono client on a leasehold disrepair claim, which included the drafting of a Part 36 offer and a Calderbank offer.


Housing law

  • Drafted a skeleton argument for a local authority to defend an intentional homelessness decision.
  • Advised a local authority on a matter involving statutory succession and discretionary policies under the authority's Housing Allocation Scheme.
  • Drafted a defence in the context of a historic possession proceedings involving points on limitation periods.
  • Drafted an advice on the disputed power under s. 249 of, and Schedule 13A to, the Housing Act 2004 to increase the penalty amount between issuing a notice of intent and a final penalty notice for failure to apply for an HMO licence.

  • Advised a pro bono client on penalties for the incorrect handling of a tenancy deposit under Chapter 4 of the Housing Act 2004.

  • Drafted a skeleton argument in an appeal involving an intentional homelessness determination by the local housing authority.

  • Drafted an opinion on the correct approach to designating an area for selective licensing under section 80 of the Housing Act 2004.

  • Drafted a skeleton argument for a CMC in a repossession claim (rent arrears and ASB).

  • Drafted a reply in possession proceedings involving a mandatory antisocial behaviour ground under section 84A(3) of the Housing Act 2004 and rent arrears under Schedule 2 of the Housing Act 2004.


Court of Appeal clarifies important aspects of the Covid-19 possession hearings stay and encourages parties to be pro-active
By Dr Christina Lienen Earlier this week, in Arkin v Marshall [2020] EWCA Civ 620, the Court of Appeal determined important issues about the validity and effect of Practice Direction 51Z,....


Court of Protection Law

  • Advised a local authority on CHC funding and the prospects of challenging a CCG finding (including by judicial review) of there no longer being a primary health need under the National Framework 2012 and the National Health Service Commissioning Board and Clinical Commissioning Groups (Responsibilities and Standing Rules) Regulations 2012.
  • Represented the Office of Public Guardian at a hearing determining capacity and appointing a deputy under the Mental Capacity Act 2005.

  • Advised a local authority on the procedure followed by a CCG in determining continuing care obligations as well as ordinary residence under the Care Act 2014.
  • Brixton Advice Centre.
  • Advocate.
  • Court of Protection Bar Association (CPBA).
  • Constitutional and Administrative Law Association (ALBA).

News: Housing

Court of Appeal clarifies important aspects of the Covid-19 possession hearings stay and encourages parties to be pro-active

15th May 2020

By Dr Christina Lienen Earlier this week, in Arkin v Marshall [2020] EWCA Civ 620, the Court of Appeal determined important issues about the validity and effect of Practice Direction 51Z,....