Paul Martenstyn

Paul Martenstyn is our exclusively recommended Legal Sector Management Consulting expert in the UK – England on the Advisory Excellence website. If you need assistance in this area, please contact Paul directly using the contact details listed above.

Endorsed by Advisory Excellence

Paul Martenstyn is a globally recognised trusted advisor in business growth and strategy for the world’s best law firms, barristers’ chambers and litigation funders. He has launched high-profile legal businesses around the world, supported senior leaders in law on commercial strategy and delivered capital deals with a combined value of many billions of dollars.

Paul started his career in barristers’ chambers in 1997 and, in 2008, joined the Magic Circle set Fountain Court Chambers, where he quickly rose to a senior leadership position. During his decade there, Paul designed and delivered one of the Bar’s most impactful and award-winning commercial strategies. Crucially, it was there that he cultivated close, lifelong relationships with the world’s leading litigators and arbitration lawyers. Paul moved into litigation finance in 2018 as Managing Director of Vannin Capital, latterly owned by Fortress, the leading New York based litigation fund. There he honed his talents in disputes finance, developing an expert grasp of the economic drivers behind the most significant cases in the global market. Notably, his network sought him out for advice on every high-value, high-stakes matter.

In 2020 Paul became the co-founder of Prosperant, with a launch mandate to develop an existing barristers’ chambers, which, under his leadership, increased revenues by a record margin. Since then, he has launched and managed a diverse group of law firms and chambers around the world, secured funding for over $500 million of cases and financings, and supported several stand-out global practices in tackling sophisticated business challenges to harness fresh growth and progress.

Throughout his career, Paul has presented at conferences around the world, such as the IBA and COMBAR, on topics ranging from business development, operational strategy, performance analysis, and market economics right through to big-picture innovation. Paul’s market-leading dedication to client service, leadership and innovation has been consistently recognised in Chambers and L500 for the past 15 years.



Over the past decade, we’ve developed market-leading commercial strategies for some of the world’s biggest and brightest law firms and barristers’ chambers. Supported by expert economic researchers and industry analysts, our advisors work with international boards to drive programmes that create a lasting legacy for management teams. Crucially, they all have real-world experience of managing legal businesses from the inside, across a diverse range of jurisdictions, from the UK, the Americas, and Continental Europe, to the GCC, Asia and Australasia.


Our long-established networks, combined with our access to sources of sophisticated capital, position us as a destination advisor for growth and change. That’s why some of the world’s leading practices and technologies chose us when they sought investment to help them flourish, particularly when it comes to exploring new territories and fresh practices. In addition to helping finance growth and expansion, organically or through mergers and acquisitions, we support leading litigators and in-house legal teams with the right funding and insurance solutions for their most challenging disputes.


We can help lawyers fund, design, develop and deliver the practice they’ve always dreamed of. All with a simple, discreet and proven methodology that has helped hundreds of lawyers and barristers create the businesses their clients deserve to be served by. From identifying seed capital to project planning and timeframes for design, development and deployment, plus considerations for management support to accelerate growth, we deliver everything you need to get you to a go-live date. It all starts with a conversation about what’s possible.

Richard Buxton LLB(Hons)

Richard Buxton LLB(Hons) is our exclusively recommended Mediation expert in the UK – England on the Advisory Excellence website. If you need assistance in this area, please contact Richard directly using the contact details listed above.

Endorsed by Advisory Excellence

I’m Richard Buxton, and I’m a Family lawyer and Civil & Commercial Mediator with clients in East Sheen, Richmond, Kew, Brentford, Twickenham, Putney, Barnes, Mortlake and the surrounding areas.

When I reflect on my career, I’m struck by how fortunate I’ve been, and I’m pleased with what I’ve accomplished. But not for the reasons you might think.

It’s hard to believe now, but my career has spanned four decades of working in law around the world. I’ve been a partner in a law firm in the City of London, litigated in the High Courts of London and Singapore, and have spent 25 years’ as a topflight property lawyer.

Wide ranging experience

I can help you with a range of legal issues including Family Law and  Civil & Commercial Mediation.

If you are considering getting Divorced, you can speak to me about matters to do with ChildrenFinancial AgreementsProperty Dispute Resolution, the dreaded FORM E and Relationship Agreements.

A trained and experienced Mediator, I offer trailblazing One Family One Lawyer services to couples who are on the path towards Divorce.


Jessamy Gallagher

Jessamy Gallagher is our exclusively recommended Corporate Law expert in England on the Advisory Excellence website. If you need assistance in this area, please contact Jeassamy directly using the contact details listed above.

Jessamy is the Global Co-Chair of the Paul Hastings Corporate Department and is a partner in the Energy and Infrastructure practice, based in the London office.

Jessamy focuses her practice on international public and private M&A in the infrastructure, energy, and real assets markets. She also has extensive experience counselling on business-critical corporate governance matters.

Jessamy regularly advises a wide range of global pension, infrastructure, and fund manager clients, as well as a number of FTSE listed clients.

Jessamy Gallagher London Office:

Jessamy Gallagher is a member of the Australian-United Kingdom Chamber of Commerce.

The London office has experienced unprecedented growth in recent years, and continues to grow as we invest in building our practices in key areas such as finance and technology. Matching the strength of our U.S. offices, and drawing on the resources of our European and Asian network, enables us to offer our clients a unique mix of innovative legal strategies and advice on the full range of financial products.

Strategies For Growth:

Our lawyers provide the legal solutions and business insights necessary to help our clients navigate new paths to growth. We have advised on numerous complex domestic and cross-border deals and financings, as well as defended our clients’ interests in a wide range of disputes.

Over the past several years, we have significantly expanded our team to better serve our clients’ evolving needs.

Shivani Jegarajah

Shivani Jegarajah is our exclusively recommended Immigration Law expert in England on the Advisory Excellence website. If you need assistance in this area, please contact Shivani directly using the contact details listed above.

Called to the UK Bar in 1993, Shivani has been providing cutting edge advice and legal representation in her specialist field of immigration and related human rights ever since. Renowned for taking a pro-active and sometimes aggressive approach to the law, she also has the personal touch which gives her clients confidence in her ability to achieve their desired outcome. She is able to think “outside the box” and make legal arguments that may not have been considered previously, thereby setting a precedent for other cases.

Shivani has represented clients before the Supreme Court and Court of Appeal as well as at First Tier and Upper Tribunal level. Her ability to convince a judge or tribunal of the merits of complex cases is unrivalled. She is a firm believer in the rights of every asylum seeker or migrant to be heard and she will fight to convince the Court to take into account all the applicant’s circumstances before reaching its decision. She has a track record of preventing deportations via Judicial Review and has been succeessful in getting deportees taken off flights at the last minute.

More recently, Shivani has represented clients involved in disciplinary proceedings where their livelihoods are threatened by allegations of professional misconduct. This includes BSB, SRA, GMC and NMC cases.

Shivani has often appeared in the media in relation to Human Rights issues such as being asked to analyse the leaked draft of the Counter Terrorism Act in Sri Lanka and its consequences for Tamils. She has spoken before the Panel Meeting at several Sessions of the UNHRC on War Crimes Investigations by the Sri Lankan Government.

Shivani has also been asked to comment on the removal of Shamima Begum’s citizenship and the refusal by the UK government to allow her back into the UK.

Chambers Overview:

Justitia Chambers was formed in November 2016 by Shivani Jegarajah and our Chambers Director, Elaine Cheeseman. Shivani has now been practising in asylum and immigration law for some 30 years and has been ranked in Chambers & Partners, the Legal 500 and Lawyer Monthly. Elaine is a former Senior Clerk and Chambers Manager with more than 35 years’ experience in administration and marketing.

Justitia aims to give its barristers a flexible structure and the freedom to practise and develop as individuals. Its key strengths are efficient and professional administration that serves both instructing solicitors and lay clients effectively.

Justitia has always sought to encourage and support the careers of working parents and carers given that this is the background of the founders. It is for this reason that we operate an entirely virtual office with access to conference facilities near to the Courts and Tribunals, where our barristers can meet clients when necessary.

Justitia believes in developing close working relationships with instructing solicitors but also welcomes enquiries from lay clients via the Public Access Scheme.

Justitia continues to recruit members who wish to take advantage of this kind of flexible working environment, giving them the opportunity to achieve a better work-life balance yet with the infrastructure and commitment behind them to fully support their practices.

Simon Harrison

Simon Harrison is our exclusively recommended Healthcare Management expert in England on the Advisory Excellence website. If you need assistance in this area, please contact Simon directly using the contact details listed above.

Simon is a Board-level Director with considerable multi-site experience who is committed, energetic, and experienced. outstanding interpersonal, communication, and networking abilities. extensive experience working in diverse and complex companies, with a track record of success in leadership and change management.

Ideal for Board-level Health and Social Care Advice.

Simon is an extremely capable director who welcomes novelty and new challenges. He is highly commercially savvy and concentrated on delivering outcomes while upholding high customer standards. He has a clinical background, is adaptive, and possesses a sizable change management portfolio, all of which provide value.

Simon is able to lead organisations through big change while interacting with the people needed to provide the continuous service and winning over hearts and minds. Successful businesses are fuelled by their people.

Through the execution of strategic, operational, and organisational change, Simon works with enterprises to ensure the effective, efficient, and economical delivery of services and to strengthen the management teams’ competencies.

Simon is aware of the difficulties that organisations are under and acknowledges that while the problems they are facing are not particularly original, the answers might be. Simon has a lot of experience working with corporate executives to build their capacities and produce results.

Dr F Javed Uddin

Dr F Javed Uddin is our exclusively recommended ENT Surgery expert in England on the Advisory Excellence website. If you need assistance in this area, please contact Javed directly using the contact details listed above.

Endorsed by Advisory Excellence

Mr. Javed Uddin has been a dedicated professional in the field of ENT (Ear, Nose, and Throat) for over twenty years, working in NHS university teaching hospitals. In 2012, he was appointed as an ENT Consultant at the University Hospitals of Leicester, where he is currently the head of the ENT service. His practice covers all aspects of ENT disease, including specialist clinics for children’s disorders and a dedicated neck lump clinic. Mr. Uddin has a specialist practice in advanced sinus surgery, utilizing state-of-the-art equipment for diagnosis and treatment.

He has extensive experience in endoscopic (keyhole) surgery for nasal obstruction and uses 3D navigation systems for advanced sinus surgery. His medical research focuses on the growth of new blood vessels in tumors, patterns of sinus disease, and the link between the nose and the lungs. His dedication to excellent patient care and innovation is exemplified by his performance of the first-ever EXIT procedure in Leicester on a baby still in the womb, which was covered in the national press. For his exceptional work, he was awarded the esteemed Caring at its Best award from the University Hospitals of Leicester.

Mr. Uddin’s qualifications include BSc(Hons), MB ChB(Hons), MRCS, and FRCS(ORL-HNS) London. He is a council member of the Midland Institute of Otolaryngology and is actively involved in lecturing and teaching medical students, general practitioners, and trainee surgeons on nationally held courses.

Some of the principal treatments carried out by Mr. Javed Uddin at Spire include:

– Ear Nose and Throat (ENT): grommets insertion (glue ear treatment); hearing loss; sinus surgery (functional endoscopic sinus surgery or FESS); snoring treatment; thyroidectomy surgery; tonsillectomy for adults; and tonsillectomy and adenotonsillectomy for children.

– General treatments for ear, nose, and throat conditions in adults and children, including voice disorders, thyroid disease, sinus disease (including allergy and nasal polyps), hearing loss, snoring, and neck lumps.

Mr. Uddin’s specialist care and knowledge, combined with his friendly and personable manner, have established him as East Midland’s foremost ENT surgeon and specialist. His commitment to training the next generation of doctors and surgeons ensures the continuous delivery of top-quality care.