Professional portrait of Julian Mercer in a tailored suit
Commercial Court and arbitration

I act in the disputes that follow broken partnerships, failed deals, and difficult boardroom decisions.

Barrister · Called 2008 · Commercial Court · LCIA

Called 2008
Inner Temple
Commercial Court
LCIA work
Founder disputes
Board investigations
Called 2008
Inner Temple
Commercial Court
LCIA work
Founder disputes
Board investigations
My practice

The instructions that have shaped my career.

Most of my work arrives when trust has gone, the timetable is short, and somebody needs a lawyer who can keep the facts, the law, and the human problem in the same frame.

Typical clients

Founders, private investors, family offices, boards, and the solicitors who bring me in when a matter has become more delicate than expected.

Commercial Litigation and Arbitration
I act in High Court and arbitral disputes over broken contracts, ownership fights, warranty claims, and difficult exits.
Commercial Court pleadings
LCIA and ad hoc arbitration
Witness-heavy final hearings
Founder, Partnership, and Shareholder Disputes
A large part of my practice concerns relationships that were once close and have now become impossible to manage.
Board deadlock
Minority protection
Interim injunctions
Investigations and Crisis Response
I lead sensitive internal investigations for boards, audit committees, and investors who need facts before they need theatre.
Witness interviews
Privilege strategy
Board memoranda
Private Capital and Post-Deal Claims
I am often instructed after acquisitions, investment rounds, and restructurings when the paperwork says one thing and the relationship says another.
Earn-out disputes
Warranty and indemnity claims
Portfolio company conflict
Selected matters

A few matters that explain the sort of lawyer I am.

The details are adapted for confidentiality, but the pattern is true to my practice: difficult relationships, imperfect facts, and a need for calm judgment under pressure.

Representative workWhere I add value
I am usually instructed after the first polite letter and before the real damage is done.
My role is rarely to produce volume. It is to decide quickly what matters, what can wait, and what story will still make sense in court when the papers are no longer fresh.

Evidence

I try to identify the two or three documents that will quietly control the whole case.

Timing

A sensible legal position is not enough if it arrives a week too late for the board or the court.

Temperament

Clients do better when the lawyer stays calm, tells the truth early, and never performs outrage.

2024 | Founder dispute
Acted for the co-founder of a software business in a week-long injunction fight over control of code, client lists, and board authority.
I narrowed the case to three documents that mattered, prepared the principal witness over a single weekend, and turned a chaotic internal quarrel into a disciplined hearing record.
Interim injunction
Cross-examination prep
Negotiated exit framework
2023 | Post-M&A
Advised a European family office after a nine-figure acquisition deteriorated into warranty, earn-out, and management misconduct claims.
I built the early merits analysis, separated emotional grievance from recoverable loss, and helped the client settle from a position of strength before expert costs swallowed the case.
Warranty analysis
Quantum assessment
Without prejudice strategy
2022 | Investigation
Led an internal investigation for a listed services group following whistleblower allegations against a regional chief executive.
I interviewed senior witnesses, kept the process tight enough not to disrupt operations, and delivered findings that the board could act on within the week.
Privileged investigation
Audit committee reporting
Executive findings paper
Warmly lit legal office interior

A habit I learned early

Most cases are won or lost in the chronology before anyone reaches the courtroom. I have trusted that instinct since my first years in City disputes.

How I work

I keep my practice small enough to stay close to the facts.

Clients tend to come to me when they want one senior lawyer on the problem from start to finish, not a procession of updates from people who have only skimmed the bundle.

1

I start with chronology

Most disputes become clearer once the dates are right. I build the chronology early and use it to test every allegation, defence, and witness account.

2

I write the case theory before the room gets noisy

Clients often arrive with an avalanche of detail. My job is to decide what a judge, tribunal, or board will still care about six months later.

3

I prepare witnesses properly

Good witness preparation is not coaching. It is making sure the person understands the documents, the pressure points, and the questions that matter.

4

I protect room to settle

I like cases that are ready for trial, because those are usually the cases that settle on terms my client can live with.

Biography

The route to this practice was not accidental.

I grew up in York, read History at Durham, completed the BCL at Oxford, and trained in City disputes before moving into independent advocacy. That route still shapes how I think.

York

I grew up around practical people who distrusted drama and admired preparation. Law suited me for exactly that reason.

Durham

Studying History taught me to care about chronology, motive, and the danger of overconfident narratives.

Oxford

The BCL sharpened my company law and restitution work, but it also taught me how much clear writing matters.

Practice today

I now run a deliberately focused disputes practice from London, acting in court, arbitration, and pre-action crises.

What others say

Most of my instructions come back through the same solicitors.

That matters to me more than public profile. I would rather be remembered for steadiness, preparation, and judgment than for noise.

Julian has the calmest courtroom manner of any advocate I have instructed. He never sounds rattled and he never wastes a sentence.

Instructing solicitor, City disputes team

He understands founders unusually well for a commercial litigator. He knows when the legal point is really a control point.

Chief executive, venture-backed client

What stood out was the preparation. By the time we got to the hearing, he knew the papers more closely than anyone in the room.

General counsel, private investment group

Profile

The professional detail behind my practice.

The essentials of my background, courts, writing, and working habits. Enough to understand how I came to this work and how I try to do it.

I read History at Durham before completing the BCL at Oxford. I trained in City litigation, which gave me a respect for documentary discipline long before I began appearing in court on my own feet.

Contact Julian

If the facts are moving quickly, send them early.

I am based near Chancery Lane and I usually answer new enquiries myself. If the matter is urgent, send the documents first and I will tell you quickly whether I can help.

Julian Mercer

Confidential instructions and new enquiries

Chambers

38 Chancery Lane, London WC2A 1EN
London based, acting nationwide in court and arbitration.

Chancery Lane chambersCommercial Court and arbitrationShareholder disputes and investigations