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Iona Nicolson is a star of tomorrow. She has extraordinary legal ability and a depth of experience and expertise beyond her relatively few years in practice. She has an encyclopedic memory and an ability to weave together complex issues in straightforward ways. Already a wonderful lawyer and making a clear impact in the field, Iona will be a trailblazer for tomorrow's family law world.

Legal 500 2026
About

Iona Nicolson is an associate in the Family team, advising ultra-high-net-worth, high-net-worth and high-profile clients such as city professionals and business owners, on private children and matrimonial financial matters, particularly those arising from relationship breakdowns. 

Iona has expertise in complex financial remedy cases, including those involving complex business structures, foreign assets, complicated tax issues or digital assets. She also specialises in domestic children matters, with experience in cases involving serious allegations, concurrent criminal proceedings, and other sensitive issues, and regularly works on international children matters.

In addition, Iona has a busy practice advising on pre- and post-nuptial agreements and supporting a number of clients through the voluntary financial remedy or non-court dispute resolution processes. She also works closely with foreign lawyers in countries such as the Netherlands, Turkey, Colombia and Switzerland, among others, to support her international caseload. As a native Dutch speaker who works extensively with Dutch clients and advisors, she brings particular expertise to matters involving Dutch-speaking families or cross-border issues involving the Netherlands.

A strong advocate for non-court dispute resolution, Iona supports her clients through mediation or arbitration, where appropriate. She is committed to developing viable alternatives to litigation and is part of a group piloting a scheme to give children a voice in solicitor-led negotiations. As part of this initiative, she is helping to organise a 'Voice of the Child' conference this year.

Where court intervention is necessary, Iona offers her clients personal and steadfast support during challenging proceedings. She excels in managing large volumes of evidence, drafting clear and concise witness statements, and presenting complex matters with clarity, all while ensuring her clients feel supported and well-informed throughout the process.

Iona joined Howard Kennedy in August 2023, having qualified in 2022. She is a member of Resolution, an organisation of family lawyers committed to resolving family matters constructively, and was recently appointed to the London YRes committee. Iona is also a regular contributor to industry and other publications, including eprivateclient, the Law Society Gazette and Tatler Experts' Corner. 

Recent work

  • Acting on a case involving offshore and complex trust structures.
  • Acting on a case involving offshore and complex trust structures.
  • Acting on a case with ongoing, parallel civil litigation proceedings.
  • Advising on various pre- and post-nuptial agreements, including for high profile and international individuals such as a Dutch couple currently living in England.
  • Acting in several cases which raised questions of litigation capacity.
  • Successfully obtained non-molestation and occupation orders for several clients who have been subject to domestic violence during the marriage and/or harassment since separation.
  • Successfully obtained third-party disclosure orders and freezing injunctions in a case in which the husband refused to engage in proceedings in any form.
  • Acted for the wife in financial remedy proceedings involving multiple cryptocurrencies.
  • Part of the team that successfully represented the respondent to Hague Convention proceedings on the basis that the children's habitual residence had not changed despite a lengthy stay outside of this jurisdiction.
  • Part of the team that successfully defended an application for relocation to the United States.
  • A Father v A Mother [2023] EWFC 290 (B) – successfully appealed decisions made at a fact-finding on behalf of the appellant mother.

Accolades
  • "Iona Nicolson is a star of tomorrow. She has extraordinary legal ability and a depth of experience and expertise beyond her relatively few years in practice. She has an encyclopaedic memory and an ability to weave together complex issues in straightforward ways. Already a wonderful lawyer and making a clear impact in the field, Iona will be a trailblazer for tomorrow' family law world." - Legal 500 2026 
  • London Family Law Rising Star - Doyles Guide, 2026
  • ''Iona Nicolson is a stand-out junior who is destined for greatness, already well on the track to becoming a leader in the field, Iona is a highly talented lawyer with a knack for juggling multiple complex matters while doing them all to an exceptional standard.'' -  Legal 500 2025
  • Listed as Key Lawyer, Private Client: Family - Legal 500 2024

 

Did you know

Iona enjoys hiking, running and watching Formula One racing. She is also an avid reader and podcast-listener, as well as fluent in Dutch. 

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