Boutique UK Law Firm

Modern Approach. Traditional Values.

International Legal Services Limited is a leading boutique law firm. We provide comprehensive legal advice in an innovative, modern, and timely manner.

Request a consultation Our practice areas
15+Years in practice
850+Matters handled
12Practice areas
UKRegistered Office
Where we help

Specialized legal and professional services

Tailored solutions addressing the specific needs of individuals, businesses, and international clients.

Investment Funds

Specialized structuring for private equity, hedge funds, and alternative investments.

Banking & Finance

Comprehensive financial counsel for leading institutions and multi-nationals.

Corporate & Commercial

Strategic legal services for businesses navigating domestic and global markets.

UK Trusts

Holistic wealth structuring to protect family legacy and philanthropic goals.

Foundation Companies

Innovative corporate structures offering exceptional flexibility for fintech and private clients.

Immigration

Seamless relocation solutions for high net worth individuals and global businesses.

About ILSL

A boutique London practice built on direct partner involvement, plain-language counsel, and pricing you can plan around.

Our Story

How we practice

International Legal Services Limited (“ILSL”) is a boutique law firm headquartered at 933 Nell Gwynn House Sloane Avenue, London, built on a straightforward premise: the attorney you meet is the attorney who handles your matter. We deliberately keep our caseload measured so that partners stay directly involved in the work rather than managing it from a distance.

Our practice is organized around the moments that decide a company's trajectory – forming an entity, signing a lease, hiring a team, buying a competitor, protecting intellectual property, planning succession, or resolving a dispute that could not be negotiated away. In each of those moments the legal question is inseparable from the business question, and we answer both.

We work on fixed scopes wherever the work allows it, and give candid estimates where it doesn't. Invoices are itemized and arrive without surprises. You will always know the current posture of your matter, what happens next, and what it will cost.

The firm is licensed in the UK and serves clients across the globe. Where a matter calls for counsel admitted in another jurisdiction, we coordinate with trusted local or foreign co-counsel rather than stretching beyond our license.

15+ Years in practice
13+ Attorneys & Advisors
850+ Matters handled
12+ Practice areas
Our Foundation

What guides the work

Our Mission

To give closely held businesses and families behind them counsel that is clear, practical, and directly tied to what they are trying to achieve – delivered by the attorney they actually hired.

Our Vision

To be the firm international business owners call first: small enough to know their situation in detail, rigorous enough to handle what it turns into.

Our Values

Candor, preparation, and restraint. We tell clients what we would do, we do the work before it is needed, and we advise against matters that are not worth pursuing.

What Sets Us Apart

A different structure, deliberately

We stay small so that the people you hire are the people doing the work.

How we work

Fixed scopes where we can, clear estimates where we can't, and no surprises on your invoice. You'll always know the status of your matter.

Who we serve

Founders, families, property owners, and growing employers across the UK and international operations abroad.

How we communicate

Plain language, prompt replies, and a named point of contact on every matter. Your questions never go into a queue.

Community Commitment

Giving time where it's needed

A boutique firm is part of the community it serves. We commit firm time to matters that would otherwise go without counsel, and we prioritize organizations working in London and internationally.

  • Pro bono representation across London communities
  • Reduced-fee counsel for early-stage non-profits
  • Small business legal clinics and workshops
21 Organizations supported
What we do

Practice areas

Core practice areas, plus focused support across the matters that surround them.

Investment Funds

Specialized structuring for private equity, hedge funds, and alternative investments.

We advise on the structuring of all types of investment funds including hedge funds, private equity, and real estate funds with rigorous cross-border compliance.

Services we provide

  • Fund Formation & Structuring
  • Service Agreements & Contracts
  • Regulatory Compliance & Filings
  • Investor Subscription Documentation
  • Cross-Border Fund Operations
  • Portfolio Asset Protection

Key features

  • Specialized Fund Expertise
  • Tailored Cross-Border Solutions
  • Global Regulatory Perspective
  • Direct Partner Involvement

Banking & Finance

Comprehensive financial counsel for leading institutions and multi-nationals.

Advising leading financial institutions and multi-nationals on a wide range of complex banking, lending, and corporate finance matters.

Services we provide

  • Project Acquisition Financing
  • Real Estate Finance & Mortgages
  • Capital Markets Transactions
  • Debt Restructuring & Workouts
  • Syndicated Lending Facilities
  • Secured Transactions & PPSA

Key features

  • Strategic Financial Insights
  • Robust Risk Mitigation
  • Cross-Border Execution Capability
  • Institutional Experience

Corporate & Commercial

Strategic legal services for businesses navigating domestic and global markets.

We advise on domestic and cross-border transactions, corporate structuring, mergers and acquisitions, and commercial joint ventures.

Services we provide

  • Entity Formation & Incorporation
  • Mergers & Acquisitions (M&A)
  • Commercial Contracts & Agreements
  • Shareholder & Partner Agreements
  • Corporate Governance Protocols
  • Joint Venture Structuring

Key features

  • Direct Partner Involvement
  • Commercial Business Focus
  • Timely Transaction Delivery
  • Multijurisdictional Coordination

UK Trusts

Holistic wealth structuring to protect family legacy and philanthropic goals.

We take a holistic approach to wealth structuring, advising on trusts and estate vehicles to achieve optimal results for family unity and legacy protection.

Services we provide

  • Asset Protection Trusts
  • Private Trust Companies (PTC)
  • Family Office Structuring
  • Pension & Retirement Planning
  • Charitable Trust Foundation
  • Trustee Advisory Services

Key features

  • Holistic Wealth Approach
  • Strict Confidential Handling
  • Legacy & Asset Protection
  • Tax-Efficient Structures

Foundation Companies

Innovative corporate structures offering exceptional flexibility for fintech and private clients.

Foundation companies provide unique hybrid characteristics popular for their flexibility. We advise fintech firms and private clients on their establishment.

Services we provide

  • Fintech Corporate Structuring
  • Decentralized Protocol Entities
  • Succession & Governance Setup
  • Asset Holding Foundations
  • Regulatory Licensing Support
  • Bespoke Articles of Incorporation

Key features

  • Innovative Structural Flexibility
  • Modern Digital Asset Approach
  • Secure Entity Setup
  • Regulatory Alignment

Immigration

Seamless relocation solutions for high net worth individuals and global businesses.

Assisting high net worth individuals, investors, and families to relocate their residences and business operations smoothly to the United Kingdom.

Services we provide

  • Investor & Innovator Visas
  • Work Permits & Sponsorship
  • Permanent Residency & Indefinite Leave
  • Global Mobility & Citizenship
  • Family Dependent Visas
  • Corporate Immigration Audits

Key features

  • Rigorous Regulatory Compliance
  • Seamless Family Relocation
  • Expert UK Visa Guidance
  • Personalized Case Management
Also Handled

Additional areas

Regulatory & Compliance

Helping clients stay ahead of changing UK and international legislation to manage enterprise risk.

Real Estate

Expert counsel on commercial and residential real estate acquisitions for developers, investors, and HNWI.

Intellectual Property

Protection of corporate brands, trademarks, and proprietary assets through robust registration and defense.

Employment Law

Assisting growing employers with workforce compliance, executive compensation, and employment agreements.

Trade & Licensing

Advising international companies on establishing commercial operations, licensing, and trade compliance in the UK.

Wills & Estate

Ensuring valid wills and estate documentation are in place to safeguard your family estate and probate administration.

Why Choose ILSL?

Delivering specialized expertise and tailored solutions with absolute professional integrity.

Direct Partner Access

The professional you meet is the professional who handles your matter from start to finish.

Cross-Border Support

Corporate, trust, and immigration questions managed cohesively across jurisdictions.

Transparent Operations

Clear scopes where the work allows and professional transparency always.

Plain-Language Counsel

Clear recommendations tailored to what you are trying to achieve.

Our People

Enterprising lawyers and professionals dedicated to understanding your legal needs across UK, US, and Mexican educational and professional backgrounds.

15+Years in practice
13+Attorneys & Advisors
850+Matters handled
12+Practice areas
Leadership & Solicitors

Core Legal Team

PRACTICE AREAS
Corporate LawTrust StructuresHigh Net Worth Advisory
BIOGRAPHY

Oscar Martinez Yanez serves as Director at ILSL, leveraging over fifteen years of legal expertise. His focus lies in crafting corporate and trust structures tailored to high net worth individuals, bridging strategic vision with rigorous compliance across international jurisdictions.

EDUCATION
  • University of Oxford, Faculty of Law, LL.M. | Oxford, UK
  • Universidad Nacional Autónoma de México (UNAM), J.D. | Mexico City, Mexico
BAR ADMISSIONS
  • Solicitor of England and Wales
  • Mexican Federal Bar Association
PROFESSIONAL RECOGNITION
  • Former Lead Corporate Arbitrator
  • SRA Regulated Practitioner (SRA No: 572148)
  • International Bar Association Member
REPRESENTATIVE MATTERS
  • Engineered multi-jurisdictional asset protection structures for global clients
  • Directed cross-border corporate reorganizations with zero regulatory friction

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

PRACTICE AREAS
Corporate & FinanceM&AInvestment Funds
BIOGRAPHY

David Nevin brings a wealth of legal expertise spanning over 14 years. His experience encompasses cross-border corporate and finance dealings, M&A, and investment funds.

EDUCATION
  • London School of Economics and Political Science (LSE), LL.B. | London, UK
  • Columbia Law School, J.D. | New York, NY, US
BAR ADMISSIONS
  • Solicitor of England and Wales
  • New York State Bar
PROFESSIONAL RECOGNITION
  • SRA Regulated Solicitor (SRA No: 567388)
  • Legal 500 Recommended Individual
REPRESENTATIVE MATTERS
  • Successfully structured cross-border investment funds exceeding £120M
  • Advised on high-profile corporate acquisitions across UK and international markets

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

PRACTICE AREAS
Private ClientAdvocacyFamily & Mental Health Law
BIOGRAPHY

Barbara is a solicitor at ILSL with over 10 years of legal experience. She has acted in all aspects of advocacy, private client matters, mental health law, and family law.

EDUCATION
  • University of Cambridge, B.A. Law | Cambridge, UK
  • Universidad Iberoamericana, Postgraduate Certification | Mexico City, Mexico
BAR ADMISSIONS
  • SRA Regulated Solicitor
  • Law Society Private Client Section
PROFESSIONAL RECOGNITION
  • SRA Verified Practitioner
  • Law Society Accredited Specialist
REPRESENTATIVE MATTERS
  • Successfully defended complex multi-jurisdictional private client estates
  • Secured favorable resolutions in sensitive high-net-worth family matters

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

PRACTICE AREAS
Administrative LawPublic LawRegulatory Frameworks
BIOGRAPHY

Dave Anthony is a solicitor at ILSL bringing over 13 years of legal experience. He specializes in administrative and public law, offering deep insight into regulatory frameworks.

EDUCATION
  • King's College London, LL.B. | London, UK
  • Harvard Law School, LL.M. | Cambridge, MA, US
BAR ADMISSIONS
  • England & Wales Roll of Solicitors
PROFESSIONAL RECOGNITION
  • SRA Regulated Solicitor (SRA No: 412094)
  • Public Law Project Contributor
REPRESENTATIVE MATTERS
  • Successfully challenged regulatory determinations in appellate courts
  • Guided institutional clients through complex compliance audits

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

PRACTICE AREAS
Wills & TrustsEstate PlanningProbate
BIOGRAPHY

Andres Barcenas offers a distinct edge in complex estate defense and inheritance preservation, shaped by his years as a complex civil advocate in London and international venues. His deep understanding of how estate challenges are constructed and argued in local courts allows him to anticipate opposing strategies and craft flawless asset architectures. With experience handling hundreds of contested estate cases, he brings absolute clarity and proven transactional skill to every client he serves.

EDUCATION
  • University of Bristol, LL.B. | Bristol, UK
  • Tecnológico de Monterrey, J.D. | Monterrey, Mexico
  • New York University School of Law, LL.M. | New York, NY, US
BAR ADMISSIONS
  • Solicitor of England and Wales
  • U.S. District Court Admissions
  • Mexican Federal Courts Bar
PROFESSIONAL RECOGNITION
  • Former Lead Estate Arbitrator
  • Board Certified Trust & Estate Law Specialist
  • National Association of Estate Planners
  • SRA Verified Practitioner (SRA No: 451460)
REPRESENTATIVE MATTERS
  • Favorable complex distribution asset recovery settlement
  • Contested estate administration elements completely dismissed
  • Substantially reduced tax exposures in multi-generational family trusts

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

PRACTICE AREAS
Client CoordinationCourt FilingsDocument Administration
BIOGRAPHY

Gabriella Rodriguez ensures smooth operations across the firm’s probate and estate practice, serving as the central point of contact for clients, administrative staff, and judicial clerks. Her precise management of court schedules, document filings, and official correspondence keeps complex legal workflows moving without delay. Dedicated to clear communication and empathetic service, she supports both attorneys and families during key stages of estate administration.

EDUCATION
  • University of Westminster, B.A. in Legal Studies | London, UK
BAR ADMISSIONS
  • Notary Public Commission, United Kingdom
PROFESSIONAL RECOGNITION
  • Certified Legal Secretarial Specialist (CLSS)
  • Excellence in Client Relations Award
REPRESENTATIVE MATTERS
  • Streamlined probate document intake process across high-volume caseloads
  • Coordinated timely e-filings across multiple international probate and high courts
  • Maintained 100% compliance on judicial calendar scheduling and deadline management

Prior results do not guarantee a similar outcome. Every matter turns on its own facts.

Management & Administration

Operations Team

CORE AREAS
Financial StrategyBudgetingGrowth Initiatives
BIOGRAPHY

Bryan Hayes, a seasoned financial strategist, oversees the financial health of the firm. He is responsible for budgeting, forecasting, and driving growth initiatives.

EDUCATION
  • University of Manchester, B.A. | Manchester, UK
RECOGNITION
  • Financial Leadership Award
CORE AREAS
Talent StrategyCultureLeadership Development
BIOGRAPHY

Victoria drives our organizational culture and talent strategy. She focuses on leadership development, employee engagement, and ensuring ILSL remains a premier workplace.

EDUCATION
  • University of Westminster, M.S. | London, UK
RECOGNITION
  • HR Excellence Nominee
CORE AREAS
Regulatory StandardsRisk ManagementAML Protocols
BIOGRAPHY

Sarah ensures ILSL adheres to the strictest regulatory standards. With a background in international law, she oversees our internal risk management and AML protocols.

EDUCATION
  • King's College London, LL.B. | London, UK
RECOGNITION
  • AML Audit Excellence Rating

Client experiences

What it's actually like to work with the firm, in our clients' own words.

"International Legal Services Limited provided clear, actionable advice on our corporate trust structures..."
AV
Alexander V. UK Trusts
IN THEIR WORDS

More from our clients

"International Legal Services Limited provided clear, actionable advice on our corporate trust structures..."
AV
Alexander V. UK Trusts
"Their professional handling of our cross-border operations and relocation was faultless."
DK
Dmitri K. Immigration
"Absolute clarity, deep technical knowledge, and responsive international counsel."
CM
Claire M. Investment Funds
"The structured approach to our banking finance agreements saved months of negotiation."
JS
Jonathan S. Banking & Finance
"They navigated our foundation company setup with incredible speed and accuracy."
EP
Elena P. Foundation Companies
"Reliable counsel for our growing cross-border workforce and corporate compliance."
MT
Marcus T. Corporate Law

Testimonials reflect the experience of individual clients and are published with their permission. They are not a guarantee, warranty, or prediction regarding the outcome of any other matter. Every case turns on its own facts.

Have a matter you'd like to discuss?

Bring us the decision you're weighing and we'll tell you plainly how we'd approach it.

Request a consultation Practice areas
Join us

Open positions

Legal Compliance & Data Specialist

Full-time / Remote - London, UK

Support our administrative and compliance teams by maintaining meticulous records and managing case data.

Key Responsibilities

  • Manage client records within secure administrative systems
  • Review compliance document checklists for completeness
  • Maintain strict data protection and confidentiality standards

Requirements

  • Relevant administrative qualification or experience
  • Strong attention to detail and data management competence
  • Familiarity with regulatory frameworks and professional conduct

Terms of Service

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Last updated: May 18, 2026
Contact: info@ilsl.co.uk or +44 (0) 73 6568 7583

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We collect information you provide directly to us through contact forms, including name, email, phone number, area of legal interest, and message content.

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We use information to respond to inquiries, establish attorney-client relationships, communicate about legal matters, send newsletters (with consent), improve services, and comply with legal obligations.

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We take reasonable measures to protect personal information from unauthorized access. However, no method of transmission is completely secure and we cannot guarantee absolute security.

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5. Third-Party Sharing

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Questions? Contact us at info@ilsl.co.uk or +44 (0) 73 6568 7583.

9. Policy Updates

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Last updated: May 18, 2026
Contact: info@ilsl.co.uk or +44 (0) 73 6568 7583

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7. Changes to This Policy

We may update this policy. Material changes will be posted on this page.

8. Questions?

Contact us at info@ilsl.co.uk or +44 (0) 73 6568 7583.

Last updated: May 18, 2026
Contact: info@ilsl.co.uk or +44 (0) 73 6568 7583
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