I was born and raised in Jersey in the Channel Islands. After attending Jersey College for Girls, I completed my law degree and legal practice course at the University of Sheffield, returning to the Island in 2005, where I began my legal career in the commercial dispute resolution department at Appleby. I worked my way from legal assistant to senior associate and I was sworn in as a Jersey Advocate in 2010. In 2016, I joined leading boutique employment and data protection firm Callington Chambers, where I was a partner.
I commenced practice as a specialist sole practitioner in 2019 because I wanted to create a law firm that does things differently. Every case and each client are unique, and by continuing to focus on my specialist areas of data protection, freedom of information, mental health and dispute resolution I can offer expert, focused advice in those areas. People are at the heart of everything I do.
I am keen to support student lawyers and am on the Board of Examiners for the local Advocates and Solicitors examinations and was previously a trustee for the Institute of Law Endowment Trust.
I have worked in the field of information law since 2008 and been involved in some of the most interesting and ground-breaking cases in this area. I deal with the full spectrum of issues, both non-contentious and contentious and I am ranked as a leading partner by the Legal 500 and noted as Jersey’s leading data protection specialist.
I’ve worked with clients to ensure that their policies, procedures and third-party contracts can demonstrate compliance with relevant data protection legislation, and I’ve drafted notices to meet the required standards oftransparency. I’ve advised clients who have suffered significant data breaches (including working with foreign lawyers where there are cross-jurisdictional and insurance elements), carried out data audits and represented data subjects whose data has been compromised, including helping to secure compensation for those individuals.
I am a Certified Information Privacy Professional (CIPP/E) and have acted for those in the public and private sector including law firms, health establishments, charities, trust companies and regulators.
I am regularly invited to speak at conferences and also provide in-house training for organisations, on request.

I am passionate about the field of mental health and was one of the very first local lawyers to receive accreditation from the Law Society of Jersey to represent individuals detained in hospital under local mental health legislation. I have also been involved in several ground-breaking cases following the implementation of the Capacity and Self-Determination (Jersey) Law 2016 acting either for incapacitated individuals or appointed as amicus curiae by the Royal Court, including in the case of Re B [2020] JRC 150A, where the court made findings relating to an individual’s lack of capacity to consent to sexual relations, contact and residence. I was also involved in a later case regarding that individual’s capacity to marry.
I was appointed Chairman of Jersey’s Mental Health Review Tribunal on 28 September 2023 (having previously served as Vice-Chair since 1 January 2021), and as a legal member of Guernsey’s Mental Health and Capacity Review Tribunal on 17 February 2026. In these roles, I determine a range of matters, including whether an individual should remain detained in hospital (for assessment or treatment), be subject to a community treatment order, be transferred off-island, and whether ministerial authorisations imposing significant restrictions on a person’s liberty should be upheld.
In addition, I have practised in personal injury and clinical negligence matters for many years (acting for Plaintiffs and Defendants) and have a unique blend of expertise, particularly in respect of psychiatric injury and mental health matters generally.
I also served for 4 years as a legal member of the Criminal Injuries Compensation Board.
During the first 11 years of practice, I worked on many diverse local and cross-border commercial and civil litigation matters, including in respect of bankruptcy and insolvency, insurance and general regulatory matters.
I also practise in the field of employment law primarily focusing on contentious employment data protection matters, high level employee exits and psychiatric workplace injuries, and am recommended by the Legal 500.
Leading Partner & Firm Ranked Tier 2 2021, 2022, 2023, 2024, 2025 & 2026
Next Generation Partner 2020
Recommended & Firm ranked Tier 3 2021, 2022, 2023, 2024, 2025 & 2026
Recommended 2018, 2019 & 2020
Recommended 2014
+44 (0) 1534 729747
info@advocatedvb.com
PO Box 120, St Helier,
Jersey, JE4 8QE
Advocate Davida Blackmore is regulated by the Law Society of Jersey
© COPYRIGHT 2023 ADVOCATE DAVIDA BLACKMORE