Claire is a family solicitor with over 20 years’ experience resolving complex financial and children issues.

She works on many high-profile cases, often with an international element, ensuring that her clients are kept out of the media spotlight. Her practice spans all areas of family law and she has particular expertise in reaching favourable financial solutions for high-net-worth individuals. As well as her financial practice, Claire also acts for parents in disputes concerning their children, with high success in reaching solutions without making court applications. Claire is an expert in advising upon the effects and consequences of coercive and controlling behaviour within family relationships.

Above all, Claire is committed to helping couples part with dignity and to minimise the impact on the family. She is a trained collaborative lawyer and mediator as well as a regular contributor to family law journals, the national press and industry websites. Claire formed and chaired Young Resolution (Surrey) and has remained a committed member of Resolution – a community of family justice professionals who work with families and individuals to resolve issues.

Claire is recognised in The Legal 500 2021, 2022, 2023 and 2024 editions and is noted as being “hugely capable” and “brilliant”. She is also recommended as one of the country’s top family lawyers for high-net-worth divorces in the 2020, 2021 and 2022 editions of the Spear’s 500 directory.

  • Claire has the gift for getting to the heart of a dispute, no matter how complex, and finding the right solution. She is astute, determined and never intimidated by the opposition. Clients love her. Claire has the rare skill and experience to manage cases involving money and children with equal dexterity. She has compassion and empathy without losing her steely focus. Claire is calm in any storm and carries her clients through the tempestuous journey of relationship breakdown.

    Leading Family KC

  • I want you to know that I feel so grateful I had you alongside this journey in my life. Your support has been invaluable, not only from a (very) professional point but from a human one as well. I felt you gave me the strength to be firm and strong when my husband was so psychologically aggressive and tried to be manipulative.

    Mrs. S-D

  • You were not only very professional, I felt like I was being looked after by a team of friends who were concerned about how my case was going.

    Mrs. D

  • Words that come to mind are patient, persistent and generous with her time.

    Mrs. C

  • You have made a difficult process much more bearable and always provide insightful service.

    Miss. D

  • Claire O’Flinn at Keystone Law was recommended to me as a solicitor who would be able to guide me through the minefield of unravelling my marriage. True to the recommendation, Claire guided me through the process seamlessly explaining how each step of divorce works and what would be sensible and fair for me to consider in my decision making regarding the division of marital finances and considerations for spousal and child maintenance. I would highly recommend Claire to anybody finding themselves going through a divorce. Rather than add to the trauma of separation and divorce, Claire has carefully and gently guided me through the process from petitioning for divorce to the receipt of a decree absolute after ensuring a fair settlement agreement between my ex wife and I. Thank you Claire.

    Mr. W

  • No wonder Sophie recommended you, you're bloody brilliant.

    Mrs. A

  • You do definitely do an amazing job of helping people out of awful situations!

    Ms. F

  • Thanks to you and the team for all you have done. It is appreciated. I am not sure that comes across. It’s a foul weather job you do.

    Mr. C

  • Thank you and your fabulous team for your professionalism, efficiency and kindness, over the last 12 months. I appreciate that you do this, day in, day out for your various clients, but entering into this unknown world with being 100% confident in your knowledge, skills, experience and understanding of my situation, has allowed me to manage better than I may have otherwise.

    Ms. G