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Sarah Jane Boon

Partner

Sarah Jane advises on all areas of family law.

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About

Sarah Jane advises on all areas of family law, with a particular emphasis on the financial claims that arise on divorce and applications to the English Court for financial settlement following an overseas divorce. She has a growing practice in wealth protection via nuptial and cohabitation agreements and she also advises on all private children law matters, from disputes about parental arrangements and financial claims to the relocation of children across jurisdictions. Sarah Jane has a great deal of experience in complex cases concerning substantial family wealth and those with an international element, as well as more standard domestic cases. Sarah Jane was listed in the eprivateclient 35 under 35 list in 2015 and appears in the 2018 Citywealth Leaders List (having been shortlisted in Citywealth’s Future Leaders awards in 2017). She was also listed in Legal 500 as a New Generation Lawyer in both 2017 and 2018, and then as a Next Generation Partner in 2019. She has recently been quoted in the Times, Financial Times and Huffington Post on recent family law issues.

Sarah Jane is admitted to practise in England and Wales.

Experience

  • Acted for the mother in GN v MA [2015] EWHC 3939 (Fam) during the final hearing of her application in which she was awarded what is understood to be the highest Order ever made under Schedule 1 of the Children Act in respect of both housing provision and periodical payments
  • Accted for the father in a successful application for his daughter to move from living permanently with her mother to live permanently with him, which involved establishing that the mother had made false allegations of abuse against him
  • Acted for the husband in a case involving substantial assets in three jurisdictions and arguments about whether these assets should be ring-fenced as they were inherited, as well as the weight to be attached to a prenuptial agreement

Recognition

  • UK_Legal_500_Leading_partner_2026 v2
  • sarah jane boon
  • pro-bono-recognition-list-2025-v2
  • Doyles Leading Children 2025
  • legal-500-leading-partner-2025
  • CHNW-2024-Sarah-Jane-Boon
  • pro-bono-recognition-list-2024
  • Chambers-2024-Sarah-Jane-Boon
  • uk-next-generation-partner-2024
  • boon-sarah-jane
  • sarah jane boob
  • Spears 500_2022_Ribbon
  • uk-next-generation-partner-2022
  • Sarah Jane Boon - Chambers HNW 2021

Our thinking

  • IFA Magazine, eprivateclient and Today's Family Lawyer quote Sarah Jane Boon on the concept of 'divorce day'

    Sarah Jane Boon

    In The Press

  • Helliwell v Entwistle – the (actual) conclusion!

    Sarah Jane Boon

    Quick Reads

  • Sarah Jane Boon and Jemimah Fleet write for Today’s Family Lawyer on the repeal of the presumption of parental involvement

    Sarah Jane Boon

    In The Press

  • Gen Z: Inheritance and investments

    William Marriott

    Insights

  • Gen Z and milestone planning

    William Marriott

    Insights

  • Gen Z: Parental influence and navigating strings attached finance

    William Marriott

    Insights

  • The Daily Mail quotes Sarah Jane Boon on whether Taylor Swift should consider entering into a pre-nuptial agreement following her engagement to Travis Kelce

    Sarah Jane Boon

    In The Press

  • Madeformums quotes Sarah Jane Boon on navigating school holidays as co-parents

    Sarah Jane Boon

    In The Press

  • Today's Family Lawyer quotes Sarah Jane Boon on a recent Court of Appeal decision (Jenny Alzena Helliwell v Simon Graham Entwistle [2025] EWCA Civ 1055) emphasising transparency and independent legal advice for nuptial agreements

    Sarah Jane Boon

    In The Press

  • Helliwell v Entwistle live – the conclusion!

    Sarah Jane Boon

    Quick Reads

  • Valuable assets protection from death, disputes, and divorce

    Sarah Jane Boon

    Insights

  • To share or not to share, that is the question. The Supreme Court hands down judgment in ‘big money’ divorce case Standish v Standish and clarifies the position regarding matrimonialisation and the sharing principle

    Miranda Fisher

    Insights

  • Claims for Financial Relief in England After a UAE Divorce

    Sarah Jane Boon

    Insights

  • Business Assets in an English Divorce – How Can Parties Protect their Interests?

    Sarah Jane Boon

    Insights

  • Sarah Higgins, Sarah Jane Boon, Miranda Fisher and Charlotte Posnansky write for Family Law Journal on how the 2024 budget is impacting family law

    Sarah Higgins

    In The Press

  • Helliwell v Entwistle Live

    Sarah Jane Boon

    Quick Reads

  • BBC Radio 5 Live and The Telegraph interview Sarah Jane Boon on Labour’s plans for cohabitation reform

    Sarah Jane Boon

    In The Press

  • Sarah Jane Boon and Julia Cox write for Tax Adviser on safeguarding family wealth and the role of pre- and post-nuptial agreements

    Sarah Jane Boon

    In The Press

  • LADbible quotes Sarah Jane Boon on the legal binding nature of marriages from Netflix’s 'Love is Blind'

    Sarah Jane Boon

    In The Press

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