Department profile
Ten Old Square

Partnership

UK Bar Guide 2026 : London (Bar)

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Ten Old Square

Rankings

Chambers Review

Provided by Chambers

Partnership - London (Bar)

Band 1

What the Team is Known For

Ten Old Square is highly regarded for its comprehensive coverage of partnership matters on both the contentious and non-contentious sides. Its members are instructed by solicitors' firms, property developers and financial services clients, among others, and also involve themselves with farming and medical partnership disputes. They regularly appear in court, in arbitration and in mediation, handling all the varied aspects of partnership law one could care to mention, including disputes relating to restrictive covenants, team moves and lateral hires, and partner exits. One interviewee notes: "Ten Old Square houses barristers who provide forensic legal analysis and show excellent attention to detail. They are also highly commercial in their approach." One case the set handled recently is Knipe v Paine, a matter concerning multiple partnerships between the parties and third parties, involving hundreds of UK properties operating as estate agents, financial services firms and wealth

management firms,

Keith Plowman is the senior clerk.

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Strengths

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  • Ten Old Square barristers are easy to deal with and well clerked. The clerks provide a good service, and they make our lives easier.

    Partnership respondentUK Bar

  • Ten Old Square clerks are always very responsive and good at coming up with people.

    Partnership respondentUK Bar

  • From the clerks up to the senior barristers, all involved are hugely responsive, extremely professional, really nice, very IT literate and great with lay clients.

    Partnership respondentUK Bar

  • The clerking is good at Ten Old Square, with special praise going to Deputy Senior Clerk Marc Schofield. All there are very easy to deal with.

    Partnership respondentUK Bar

  • Senior clerk Keith Plowman is superb. His client service is brilliant, and he goes above and beyond to assist. He is flexible, efficient in his billing, and a man you can have a discussion with.

    Partnership respondentUK Bar

Notable Practitioners

Provided by Chambers

  • Jeremy Callman
    Jeremy Callman

    Jeremy Callman

    Jeremy Callman is universally acknowledged for his unsurpassed combination of exhaustive technical knowledge, thoroughness of approach, formidable courtroom presence and excellent client rapport. He acts almost exclusively in partnership and LLP matters, representing both partnerships and individual partners, and maintains a strong focus on the litigation of matters for clients from the professional services and financial spheres.

    • Jeremy Callman is simply the master of partnership law.

      Partnership respondentUK Bar

    • Jeremy Callman is brilliant to work with. He's very user-friendly and a great addition to any team.

      Partnership respondentUK Bar

    • Jeremy Callman is first-class and highly sought after. Opposing parties are in a race to instruct him for disputes.

      Partnership respondentUK Bar

    • Jeremy Callman is very, very good. He is all over the big cases.

      Partnership respondentUK Bar

    • Jeremy Callman is incredibly clever, very accessible and someone who understands what we need from him. He instils confidence and always delivers.

      Partnership respondentUK Bar
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  • Jonathan Gavaghan
    Jonathan Gavaghan

    Jonathan Gavaghan

    Jonathan Gavaghan attracts special praise for his blend of deep knowledge, his client-friendliness and his particularly high degree of accessibility. He is noted for his handling of issues affecting individual solicitors or their firms, and acts on matters concerning both traditional and medical partnerships. Gavaghan further offers extensive experience as an arbitrator or arbitration counsel in partnership disputes.

    • Jonathan Gavaghan is an excellent, incredibly thorough practitioner, who provides strong client care. He is practical and very approachable.

      Partnership respondentUK Bar

    • Jonathan is a leading light in this area, who really knows the area well and is very authoritative. He has a very nice advocacy style, makes good submissions and is just a joy to work with.

      Partnership respondentUK Bar

    • Jonathan Gavaghan's legal abilities are excellent and he is always willing to take a call and discuss issues before instruction.

      Partnership respondentUK Bar

    • Jonathan Gavaghan is a great strategic thinker, who is incredibly persuasive and great to work with.

      Partnership respondentUK Bar

    • Jonathan is so smart; the level of analysis he does is unparalleled. He can look at the facts, bring it all together and make an argument in a heartbeat.

      Partnership respondentUK Bar
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  • Gideon Roseman
    Gideon Roseman

    Gideon Roseman

    Gideon Roseman devotes a sizeable proportion of his chancery and commercial practice to the litigation of partnership cases. He also assists with arbitration in complex partnership disputes.

    • Gideon Roseman is fantastic - the consummate litigator. He can dig out arguments to defend anything, and acts as a real wrecking ball to the other side.

      Partnership respondentUK Bar

    • Gideon Roseman is excellent. He has very good knowledge of the area, he is very hard-working and he provides great client service.

      Partnership respondentUK Bar
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  • Naomi Winston
    Naomi Winston

    Naomi Winston

    Naomi Winston is a highly active and very well-regarded barrister with an established reputation as junior counsel in key partnership cases, who continues to attract attention and admiration as a leading advocate and adviser in her own right. She operates across an impressively broad range of matters, acting for individuals and partnerships in the professional services and financial sectors. Winston covers both contentious and advisory mandates.

    • Naomi Winston's thought processes are always incredibly logical and sound, and she gives really clear advice. She enjoys a challenge and rises to it, leaving no stone unturned.

      Partnership respondentUK Bar

    • Naomi Winston is supremely intelligent and wonderful to work with.

      Partnership respondentUK Bar
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  • Thomas Arnull
    Thomas Arnull

    Thomas Arnull

    Thomas Arnull represents clients across a wide range of issues, including

    partner exits and team moves, and handles both contentious and non-contentious matters. His clients include solicitors, patent attorneys, local

    authorities, literary agents and farmers. He has handled a number of cases concerning offshore partnership matters and partner exits.

    • Thomas Arnull is highly meticulous in his approach and very effective.

      Partnership respondentUK Bar

    • Thomas Arnull is extremely diligent and thoughtful in his advice.

      Partnership respondentUK Bar

    • Very bright, excellent with clients and someone who shows excellent attention to detail. He's also good as he's not one to lose sight of the commercial aspects of instructions.

      Partnership respondentUK Bar

    • Thomas Arnull is one to watch; he's a delight to work with and technically superb.

      Partnership respondentUK Bar
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Ranked Barristers at Ten Old Square (5)

London (Bar)

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