Alex Cisneros

Year of Call 2015

Alex Cisneros

Year of Call 2015

Profile

Alex specialises in public law and private client work, with a particular focus on mental capacity. His practice spans complex Court of Protection health and welfare proceedings, property and affairs disputes, and related private client and public law challenges.

Alex has extensive experience advising on cross-border mental capacity issues, including deputyship, powers of attorney and jurisdictional disputes. He has provided legislative and policy advice to overseas territories and Crown dependencies in relation to their mental capacity and mental health frameworks. He also has particular expertise in end-of-life planning, including wills and lasting powers of attorney.

Alex is a member of the Attorney General’s B Panel of Junior Counsel to the Crown. He regularly advises and represents government departments and public bodies, including the Ministry of Justice, the Foreign, Commonwealth & Development Office, the Office of Qualifications and Examinations Regulation, and the Department for Education, in matters ranging from litigation to policy development.

Alex holds a PhD examining the impact of the Liberty Protection Safeguards on vulnerable people.

Select expertise to be included in the CV download:

Select expertise to be included in the CV download:

Areas Of Expertise

‘Alex produces very good quality work and is very good on his feet.’ Chambers and Partners, 2025 (Court of Protection: Health and Welfare)

‘He is thorough, he looks for issues and he advises accurately and comprehensively.’ Chambers and Partners, 2024 (Court of Protection: Health and Welfare)

Alex is ranked in Legal 500, Chambers & Partners and Best Lawyers for his Court of Protection work. He is regularly instructed in complex health and welfare proceedings, including cases involving deprivation of liberty, serious medical treatment, and cross-border issues. His practice includes disputes under both the Mental Capacity Act 2005 and the inherent jurisdiction, often with overlapping public law or human rights issues. Alex acts for public bodies, the Official Solicitor, and family members, bringing clear strategic advice and a sensitive approach to cases involving vulnerable individuals. He also advises on property and affairs matters with welfare dimensions.

Cases of Note

  • DB v (1) Humber Teaching NHS Foundation Trust (2) SSJ [2026] UKUT 57 (AAC)
  • University College London Hospitals NHS Foundation Trust v HER & Anor [2024] EWCOP 25
  • ML v (1) Priory Healthcare Ltd (2) SSJ [2023] UKUT 237 (AAC)
  • AA v London Borough of Southwark [2021] EWCA Civ 512

‘Alex produces very good quality work and is very good on his feet.’ Chambers and Partners, 2025 (Court of Protection: Health and Welfare)

‘He is thorough, he looks for issues and he advises accurately and comprehensively.’ Chambers and Partners, 2024 (Court of Protection: Health and Welfare)

Alex regularly acts in complex property and affairs matters in the Court of Protection, representing public bodies, financial deputies, attorneys, and family members. He has particular expertise in cases involving the scope of a deputy’s authority, the validity and operation of lasting powers of attorney, statutory wills, and allegations of financial abuse. Alex has appeared in two guidance cases concerning the operation of deputyship and lasting powers of attorney in England and Wales. His practice includes cross-border disputes involving property and affairs, and he is frequently instructed by the Office of the Public Guardian in contentious and non-contentious matters.

Cases of Note

  • BR v NAR & Ors [2022] EWCOP 57
  • Re Various Lasting Powers of Attorney [2019] EWCOP 40
  • Office of the Public Guardian v PGO & Ors, Re: BGO [2019] EWCOP 13

Alex has a broad public law practice with experience in tribunals, the High Court, and the Court of Appeal. He is a member of the Attorney General’s B Panel of Junior Counsel to the Crown and regularly advises and represents government departments and public bodies. His work often involves mental capacity, education, and prison law, as well as judicial review challenges arising from these areas.

Alongside litigation, Alex has provided policy and legislative advice to the Ministry of Justice, the Foreign, Commonwealth & Development Office, the Department for Education, and Ofqual, drawing on his expertise in complex statutory frameworks.

Cases of Note

  • DB v (1) Humber Teaching NHS Foundation Trust (2) SSJ [2026] UKUT 57 (AAC)
  • ML v (1) Priory Healthcare Ltd (2) SSJ [2023] UKUT 237 (AAC)
  • R (ECPAT UK) v Kent CC, SSHD [2024] EWHC 1353 (Admin)
  • Kousar & Ors v Secretary of State for the Home Department [2018] EWCA Civ 2462

Recommendations

‘Alex is highly conscientious and always turns around good quality work expeditiously. He has good attention to detail and leaves no stone unturned. His advocacy is impressive and effective.’

Legal 500, 2025

‘Alex turns work around at lightning speed.’

Chambers and Partners, 2025

‘Alex produces very good quality work and is very good on his feet.’

Chambers and Partners, 2025

‘He is thorough, he looks for issues and he advises accurately and comprehensively.’

Chambers and Partners, 2024

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