Sian has a broad public and civil law practice.

In September 2018 Sian was appointed to the Attorney General’s Civil Panel of Counsel, B Panel (London).  Sian was previously appointed to the Attorney General’s Civil Panel of Counsel, C Panel (London) from March 2015 to September 2018.

Sian was appointed to the Equality and Human Rights Commission’s panel of counsel: England and Wales, B list in May 2019.

In December 2018 Sian was admitted to the State Bar of California, and is licensed to practice law in California as an attorney.

Her public law practice is diverse and includes human rights law, immigration, inquests, judicial review, prison law and unlawful detention.

Alongside her public law practice, Sian maintains a busy civil law practice, with a particular focus on costs, contractual and tortious litigation, insurance and personal injury.  Sian also has considerable experience of civil claims with a public law element, including negligence, misfeasance in public office and conversion claims.

From August to October 2012, Sian undertook a Pegasus Scholarship to New Zealand where she spent 2 months working at Stout Street Chambers in Wellington (a commercial, civil litigation and public law set of chambers).


  • Wilfred Watson BVC Scholarship, Gray’s Inn (2005-2006).
  • Postgraduate Award Holder, Arts and Humanities Research Board (2004-2005).
  • Senior Seton Scholar, Downing College (2004).
  • Rebecca Flower Squire Scholarship, University of Cambridge Law Faculty (2002).
  • Downing College – Lovells Law Prize (2002).


“Clearly a confident and polished advocate. She cross-examines with forensic skill, writes clearly, compellingly and accurately, and manages the facts and the law extremely well – never fails to impress with her dedication and commitment to thorough case preparation and presentation. A class act and a consummate professional.”
Legal 500 (2022) Inquests & Inquiries


Attorney-General’s Civil Panel of Counsel London, B Panel (September 2018).
Equality and Human Rights Commission’s panel of counsel: England and Wales, B list (May 2019).
Attorney-General’s Civil Panel of Counsel London, C Panel (March 2015).


BVC (Very Competent), BPP Law School (2006).
BCL, University of Oxford, Brasenose College (2005).
MA (Hons) Law (First Class), University of Cambridge, Downing College (2004).

Professional Memberships

Administrative Law Bar Association (ALBA).
London Common Law & Commercial Bar Association (LCLCBA).
Personal Injuries Bar Association (PIBA).

Public Access

Undertakes Public Access work

Attorney General Panel

Appointed to B panel

TGC Inquest & Inquiries Newsletter Vol III. July 2022

6th July 2022

Welcome to the third edition of the TGC Inquests and Inquiries newsletter, a twice-yearly publication, containing articles on recent key legal developments in these fields, as well as a selection of recent noteworthy cases in which Members of Chambers have been involved.

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TGC Costs Update – Vol 7 December 2020

17th December 2020

Please see link below to the latest TGC Costs newsletter.

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TGC Costs Newsletter Vol VI

15th July 2020

Please see link below to the latest update from the TGC Costs Team.

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TGC Costs Newsletter

17th May 2018

Please see link below to the latest TGC Costs Newsletter.

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TGC Costs Newsletter

15th July 2020

Please see link  below to the 6th edition of the the TGC Costs Newsletter.

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3 Members of Chambers appear at preliminary hearing held by IICSA

25th September 2019

On Tuesday 24 September 2019 the Independent Inquiry into Child Sexual Abuse (IICSA) held a preliminary hearing in its investigation into institutional responses to allegations of child sexual abuse involving the late Lord Janner of Braunstone QC.  The preliminary hearing considered directions for the future conduct of the investigation.  A transcript of the hearing can be found at the link below.

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Three members of TGC elevated to “B” panel

12th July 2018

TGC are delighted to announce that Julia Smyth, Emma Price and Sian Reeves’ applications for the Attorney General “B” Panel of counsel have been successful, all three having previously been on the Attorney General “C” panel.

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TGC Costs Newsletter

17th May 2018

Please see link below to the latest TGC Costs Newsletter.

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TGC Costs Newsletter

4th July 2017

Welcome to the very first edition of TGC’s Costs Newsletter! Costs has been a huge part of our practice at TGC for as long as it has been recognised as a discrete area of law. Whilst the team has naturally changed and evolved over that time, it has retained phenomenal strength and depth from its leadership right through to its most junior members. We pride ourselves on being leaders in the field and being able to offer a client service level second to none. We remain extremely grateful for our Directory recognition, and through 2017 we’ve reinvigorated our energy levels as a team being ever ready to serve!

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Personal Injury Claim Settled for £180,000

13th October 2016

Anthony Johnson (instructed by Richard Foyster of Ashtons) represented the Claimant and Sian Reeves (instructed by Francois Liebenberg of the Government Legal Department) the Defendant in this personal injury claim that arose from injuries sustained by a 35-year-old Traffic Examiner in the course of her employment with the Department for Transport. Liability was admitted soon after the accident and the matter eventually settled in the gross sum of £180,000 at a Joint Settlement Meeting that took place on 11th October 2016.

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Privacy Notice

Thank you for choosing to instruct me in your case. I will need to collect and hold your personal information in order to represent you. I will take all possible steps to protect your personal information. I am determined to do nothing that would infringe your rights or undermine your trust. This Privacy Notice describes the information I collect about you, how it is used and shared, and your rights regarding it.

Data Controller

I am registered with the Information Commissioner’s Office (ICO) as a Data Controller for the personal data that I hold and process as a barrister. My registered address is Temple Garden Chambers, 1 Harcourt Buildings, London, EC4Y 9DA and my registration number is Z1699074.

Data Collection

All of the information that I hold about you is provided to or gathered by us in the course of your case and/or proceedings. Your solicitor and/or I will tell you why we need the information and how we will use it.

Our Lawful Basis for processing your information

The General Data Protection Regulation (GDPR) requires all organisations that process personal data to have a Lawful Basis for doing so. The Lawful Bases identified in the GDPR are:

  • Consent of the data subject;
  • Performance of a contract with the data subject or to take steps to enter into a contract;
  • Compliance with a legal obligation;
  • To protect the vital interests of a data subject or another person;
  • Performance of a task carried out in the public interest or in the exercise of official authority vested in the controller; and
  • The legitimate interests of ourselves, or a third party, except where such interests are overridden by the interests, rights or freedoms of the data subject.

Examples of legitimate interests include:

  • Where the data subject is a client or in the service of the controller;
  • Transmission within a group of undertakings for internal administrative purposes;
  • Processing necessary to ensure network and information security, including preventing unauthorised access;
  • Processing for direct marketing purposes, or to prevent fraud; and
  • Reporting possible criminal acts or threats to public security.

Our Lawful Basis for processing data is the performance of a contract with the data subject or so as to take steps to enter into a contract.

Our Legitimate Interest is that the data subject is a client.

I use your information to:

  • Provide legal advice and representation;
  • Assist in training pupils and mini-pupils;
  • Investigate and address your concerns;
  • Communicate with you about news, updates and events; and
  • Investigate or address legal proceedings relating to your use of my services, or as otherwise allowed by applicable law.

I do not use automated decision-making in the processing of your personal data.

I collect and process both personal data and special categories of personal data as defined in the GDPR. This includes:

Client data

  • Name;
  • Email;
  • Phone number;
  • Address;
  • Payment or bank details;
  • Date of birth;
  • Location details;
  • Device IP address;
  • Financial information;
  • Medical Records; and
  • Criminal Records.

I may share your personal data with:

  • Instructing solicitors;
  • Pupil or mini pupil, under my training;
  • Opposing Counsel, for the purposes of resolving the case;
  • My Chambers management and staff who provide administrative services;
  • My regulator or legal advisors in the event of a dispute or other legal matter;
  • Law enforcement officials, government authorities, or other third parties to meet our legal obligations; and
  • Any other party where I ask you and you consent to the sharing.

Transfers to third countries and international organisations

I do not transfer any personal data to third countries or international organisations.

I retain your personal data while you remain a client unless you ask me to delete it. My Retention and Disposal Policy (copy available on request) details how long I hold data for and how I dispose of it when it no longer needs to be held. I will delete or anonymise your information at your request unless:

  • There is an unresolved issue, such as claim or dispute;
  • I am legally required to; or
  • There are overriding legitimate business interests, including but not limited to fraud prevention and protecting customers’ safety and security.

Your Rights

The General Data Protection Regulation gives you specific rights around your personal data. For example, you have to be informed about the information I hold and what I use it for, you can ask for a copy of the personal information I hold about you, you can ask us to correct any inaccuracies with the personal data I hold, you can ask us to stop sending you direct mail, or emails, or in some circumstances ask us to stop processing your details. Finally, if I do something irregular or improper with your personal data you can seek compensation for any distress you are caused or loss you have incurred. You can find out more information from the ICO’s website http://ico.org.uk/for_the_public/personal_information and this is the organisation that you can complain to if you are unhappy with how I dealt with you.

Accessing and Correcting Your Information

You may request access to, correction of, or a copy of your information by contacting me at Temple Garden Chambers, 1 Harcourt Buildings, London, EC4Y 9DA.

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I will occasionally update my Privacy Notice. When I make significant changes, I will notify you of these through email.  I will also publish the updated Notice on my website profile.