Quillon Law LLP > London, England > Firm Profile

Quillon Law LLP
Holborn Gate
330 High Holborn

Crime, fraud and licensing > Fraud: civil Tier 5

A new entry to the market, Quillon Law LLP was founded in 2021 by Mark Hastings, the former head of civil fraud at Addleshaw Goddard; his team has quickly developed a prominent reputation among a plethora of clients, namely funds, bondholders, state-owned entities, insolvency practitioners, financial institutions and high-net-wroth individuals.

Practice head(s):

Mark Hastings

Other key lawyers:

Nicola McKinney; Michael Barnett


‘A highly experienced team with many years of expertise in civil fraud’

‘Mark Hastings Partner, Michael Barnett and the team are tremendously experienced. Worked with both Mark and Michael many years ago on Berezovsky case. Don’t over-expect, and are realistic in aims and merits. Handle the clients brilliantly and extremely courteous to counsel. Makes for a great, effective team effort.’

‘Quillon Law have always prided themselves on being conflict-free and I absolutely endorse that. Each of Quillon’s partners are leaders in their fields and are efficient, forward-thinking problem-solvers.’

‘We work with Mark Hastings frequently, who has a measured and cool-headed approach to litigation. Michael Barnett always ensures that client needs are at the forefront of his thinking.’

‘Boutique practice with exceptional lawyers. The lawyers I’ve worked with are extremely personable and professional , with the way they interact with, not only the clients but are hugely respected by their peers.’

‘Mark Hastings, Michael Barnett and Nicola McKinney have been amazing to work with. The extended teams have all been superb.’

‘The firm has had a great start and is well on the way to being one of the standout disputes boutiques. The two founding partners Mark and Michael are legends. They both have backgrounds in top firms and are now thriving given the freedom of being in a boutique. They can handle the biggest litigation with more personalised service than the big firms and be more competitive on cost. They are people you want in your corner on the toughest of fraud and commercial cases.’

‘Mark Hastings has a fantastic reputation as a go-to person for heavyweight disputes, particularly those involving Russia and CIS. He is fearless, great on law and strategy, and can be extremely robust when he needs to be. Michael Barnett has been there and done it and now brings a wealth of experience to the boutique firm environment. The firm has recruited well and is assembling a talented team.’

Key clients

Oleg Deripaska

Filatona Trading Limited

Augafield Ltd, ADM Lindenau Acquisition Limited and ADM Lindenau Limited

Bitkub Online Co Ltd

PJSC Aeroflot

JSC Rossiya Airlines

Maroil Trading Inc & Sea Pioneer Shipping Corporation

Mohammad Abrishamchi (UHNW)

Pars Iratel

Lisa Pickering

Work highlights

  • Acting for Maroil Trading Inc & Sea Pioneer Shipping Corporation in high-value Commercial Court proceedings against companies associated with the Russian Sovcomflot Group.
  • Acting for Mr Oleg Deripaska in relation to an application against him by Mr Vladimir Chernukhin for contempt of court, which is listed for trial in March 2023. The case has been the subject of intense media interest.
  • Acting for Bitkub Online Co Ltd, a crypto exchange which is a Defendant to a claim by an individual who alleges that his misappropriated assets can be recovered from Bitkub because it holds those assets on a constructive trust. This case involves a developing area of law regarding digital assets/cryptocurrency.

Dispute resolution > Banking litigation: investment and retail

Dispute resolution > Commercial litigation: mid-market

Founded in late 2021 by former Grosvenor Law (GL) partner Mark Hastings and Michael Barnett, previously a global litigation head at Addleshaw Goddard, Quillon Law LLP is a specialist commercial and corporate disputes practice; Hastings and Barnett are further supported at partner level by commercial and civil fraud litigator Nicola McKinney, an October 2022 hire from GL.

About Quillon Law
Quillon Law is a specialist commercial disputes practice.  The firm acts for corporate and individual clients in the domestic and international commercial and financial markets, including business owners and business investors.  Quillon Law represents banks and other financial institutions, state-owned entities and high-net-worth individuals. The firm also works with insolvency practitioners looking to trace and recover assets worldwide.

Quillon Law’s clients come to them to resolve complex, business-critical, and often sensitive disputes swiftly, commercially and effectively, because the partners are practised at dealing with such disputes with the judgement, experience and understanding of clients’ needs from many years in the field.

The Partnership
Each of Quillon Law’s partners has made their name with and built recognised City of London legal practices. As their career histories show, they are leaders in their areas of expertise, from multi-faceted international commercial fraud disputes to cases covering every aspect of the financial services industry. Each has in common a history of creating high quality, motivated teams.

Commercial litigation: Quillon Law’s key practice areas encompass all forms of commercial litigation, including civil fraud and finance disputes, as well as white collar and insolvency. The firm’s partners have litigated cases before all the senior courts, including the High Court. This includes the Business and Property Courts, such as the Chancery Division, Commercial Court (including the Financial List), the Court of Appeal, the UK Supreme Court, the European Court of Justice, and the Privy Council.

Much of the work undertaken by Quillon Law has an international aspect, including disputes arising in the Middle East, South America, the Far East, Africa and Europe.

Insolvency litigation: Quillon Law can assist with most aspects of corporate and personal insolvency, including rescue and recovery work, voluntary arrangements, directors’ duties and liabilities and bankruptcy.  One of the partners acted in several matters in the Insolvency and Companies List arising from the high-profile collapse of London Capital & Finance plc. These include Re London Oil & Gas [2019] EWHC 3675, which concerned a protocol for the handling of privileged information by administrators.

The team also has expertise in deceased insolvent estates, with one of the partners having acted in relation to several complex issues and claims following the death of the Russian oligarch Boris Berezovsky.

The team is highly experienced in proceedings seeking the recovery of assets. That includes proceedings advising or contesting findings by court-appointed receivers and administrators and liquidators, for example about proprietary claims made to substantial assets.

Banking and financial markets disputes: Quillon Law’s practice encompasses disputes and issues involving all aspects of the financial services industry.

The partners have lengthy track records of acting for and against retail and investment banks and other financial institutions, their counterparties and investors in financial products, often in high profile cases with an international element raising issues of importance to the industry as a whole.

As a result, the team has a deep knowledge of the industry and is especially well-placed to provide advice and solutions in respect of the types of finance-related disputes that all investors, financial institutions, their customers and counterparties face.

White-collar crime and regulatory investigations: The team at Quillon Law is experienced in acting in complex, high profile national and international white collar crime cases, which often have serious reputational implications for clients.

The team has worked with significant listed companies on substantial investigations conducted by prosecuting authorities.  They also act for individuals subject to investigation and prosecution by agencies, including the Serious Fraud Office and the National Crime Agency.  The team recently advised an individual suspect in connection with a long-running and high profile SFO investigation into the collapse of a fund.

The team regularly advises on all aspects of money laundering and sanctions compliance issues and bribery concerns in companies in all sectors, usually with an international perspective. Their capability in this area reinforces their expertise in civil fraud, financial and banking matters.

Commercial fraud and asset tracing: The team is well known for its work across multiple jurisdictions in complex fraud cases and investigations, especially in connection with high value claims. Quillon Law has been instructed in many leading civil fraud cases, both domestic and international, for both claimants and defendants.

The team has substantial expertise in dealing with large scale, multi-jurisdictional and sensitive fraud disputes and investigations, including the use of freezing and disclosure orders to prevent dissipation of assets.

The partners have acted in some of the most high-profile cases in the Commercial Court and Chancery Division in recent years. As their track records show, these include some of the biggest and most noteworthy cases in the financial markets to emerge from the credit crisis, some involving bribery and fraud.

Contentious trusts, estates and private wealth disputes: The team at Quillon Law acts for successful individuals, families, and businesses, working alongside international wealth planning and private client lawyers in Europe, Russia, and Asia as their specialist London counsel.

The team’s focus is on clients with high-net-worth and ultra-high-net-worth, often involving complex international trust structures and the businesses that support them. Quillon Law acts for both individuals and private client institutions in this area, including private banks and investment banking colleagues, who advise entrepreneurial clients.

The team has expertise in contentious probate and trust litigation, including claims for proprietary estoppel together with challenging the use of trusts to help preserve family wealth, and proceedings to remove executors, construction summonses, rectification proceedings, professional negligence and breach of trust claims arising from wills, trusts and inheritance tax.

Department Name Email Telephone
Michael Barnett michael.barnett@quillonlaw.com +44 (0) 203 840 4371
Mark Hastings mark.hastings@quillonlaw.com +44 (0) 203 840 4372
Nicola McKinney nicola.mckinney@quillonlaw.com +44 (0) 203 840 4373
Abigail Healey abigail.healey@quillonlaw.com +44 (0) 203 840 4376
Photo Name Position Profile
Michael Barnett photo Michael Barnett Partner
Mark Hastings photo Mark Hastings Partner  
Nicola McKinney photo Nicola McKinney Partner
Partner : 4
Managing Associate : 2
Associate : 2
Trainee Solicitor : 1
Personal Assistant/ Office Coordinator : 1
Finance Director : 1
HR Director : 1
Commercial Director : 1
Operations : 1