redefining legal excellence
Key Legal Practice Areas
Expertise
Private Wealth & Tax
Our Private Wealth & Tax team advises high net worth individuals, families and family offices on English law and UK tax matters involving international assets and cross border structures. We provide specialist advice where Swiss residency, offshore vehicles or international holding arrangements intersect with UK domicile, residence or tax exposure.
Ben Rosen leads the practice and is recognised in Legal 500 and Spears for his expertise in private wealth and tax planning. Quastels is also recognised as a Times Best Law Firm, reflecting the strength of our private client offering. Ben advises on UK inheritance tax planning, domicile and residence issues, trust structuring, succession planning and the ownership of UK real estate through corporate and trust vehicles.
We work closely with Swiss fiduciaries, private banks and tax advisers to ensure English law and UK tax considerations align with wider Swiss based structures. Our presence in Zug enables us to provide accessible, coordinated English law advice to Swiss resident individuals and families with UK connections, supporting long term wealth preservation and governance across jurisdictions.
Expertise
Sports Law
Our Sports Law practice advises athletes, agents, clubs, governing bodies and commercial stakeholders on disputes, regulatory matters and strategic commercial issues under English law. From our Zug presence, we are well positioned to support matters involving international federations and sports organisations headquartered in Switzerland, as well as disputes with cross border English law elements.
We act on contractual disputes, disciplinary proceedings, regulatory investigations, governance challenges and sponsorship conflicts. Our work frequently involves complex disputes between clubs, players, intermediaries and governing bodies, as well as enforcement and settlement strategy in high value commercial conflicts. We also advise on governance structures, compliance obligations and regulatory exposure affecting sports organisations operating internationally.
Simon Grossobel leads the practice with significant experience in high value and high profile disputes, bringing strong commercial litigation expertise to the sports sector. We regularly advise in matters connected to international federations and arbitration proceedings, including strategic preparation for sports related arbitration and enforcement actions.
Our approach combines legal precision with commercial pragmatism in a sector where timing, confidentiality and reputation are critical, and where disputes often carry significant regulatory and commercial consequences.
Expertise
Trust & Private Wealth Litigation
Our Trust and Private Wealth Litigation team specialises in complex and high value contentious trusts, estates and foundation disputes involving Swiss, offshore and UK structures. We act for trustees, beneficiaries, protectors, family offices and ultra-high net worth individuals where English law governs aspects of trust documentation, succession, fiduciary duties or dispute resolution.
Thomas Klemme leads the practice and is recognised for his expertise in international trust litigation, foundation disputes and art related claims. He acts in high value, multi-jurisdictional matters involving competing interests between trustees, beneficiaries and advisers, often in structures administered from Switzerland with English law elements.
Many private wealth structures overseen by Swiss fiduciaries involve UK assets or English law governed trusts. Disputes frequently create conflicts of interest that prevent existing advisers from acting for all parties. In such circumstances, independent English law representation is essential. Our presence in Zug positions us to work closely with Swiss trust companies, private banks and advisers while providing specialist English law advice in sensitive, reputationally significant disputes, including breach of trust claims, trustee removal applications, foundation governance disputes and professional negligence claims involving fiduciaries.
Expertise
Commercial Disputes & Arbitration
We advise Swiss based holding companies, multinational groups and investors on English law commercial disputes involving UK subsidiaries, joint ventures and cross border contractual arrangements.
Our work includes shareholder conflicts, joint venture disputes, contractual enforcement and complex litigation arising within international corporate structures. Many disputes involve English law governed agreements sitting within Swiss administered holding frameworks or offshore vehicles.
We also act in international arbitration, including proceedings seated in Switzerland under Swiss procedural law. We advise on tribunal strategy, jurisdiction challenges, interim relief and enforcement of awards, offering clients the neutrality and finality associated with a Swiss seat combined with specialist English law expertise.
Our focus is on resolving disputes decisively while protecting commercial relationships, governance stability and reputational interests across jurisdictions.
Expertise
Digital Assets & Crypto
Operating within Zug’s established digital asset ecosystem, we advise founders, investors, foundations and private clients on English law issues arising in blockchain and cryptoasset structures. Many token projects and crypto businesses in Switzerland utilise English law documentation for investment agreements, governance frameworks and dispute resolution clauses. We advise on token related disputes, shareholder and governance conflicts, cryptoasset ownership issues and cross border enforcement where UK legal considerations are engaged.
Jack Burroughs, a member of STEP and co author of The Digital Estate, brings recognised expertise in digital asset succession, cryptoasset planning and the legal treatment of digital property. He advises private clients and international structures on digital estate planning, custody, control and succession of cryptoassets.
Our presence in Zug allows us to engage directly with participants in Switzerland’s blockchain ecosystem while delivering specialist English law advice where Swiss and UK structures intersect.
Expertise
Corporate Structuring & International Groups
Zug is home to multinational groups and tax driven holding structures with international operations. We advise Swiss based holding companies, investors and global corporate groups on English law aspects of their UK subsidiaries, investments and commercial arrangements.
Our work includes shareholder agreements, joint ventures, governance frameworks, group reorganisations and cross border transactions where English law documentation forms part of a wider Swiss based structure. Many international groups headquartered in Switzerland utilise English law for shareholder arrangements, financing documents and dispute resolution provisions, and we ensure those arrangements align with the broader governance and strategic objectives of the group.
Working alongside trusted Swiss advisers and corporate service providers, we coordinate the establishment and structuring of Swiss and Zug based entities where English law elements are involved. We also advise Swiss entities seeking to establish or expand into the UK, including company formation, governance documentation and commercial arrangements under English law.
Our presence in Zug enables us to engage directly with decision makers while delivering seamless English law support across both jurisdictions.
Expertise
Commercial Disputes & International Arbitration
We advise corporates, investors and high net worth individuals on English law commercial disputes arising within international structures. Our work includes shareholder conflicts, joint venture disputes, contractual enforcement and complex cross border litigation involving UK subsidiaries and English law governed agreements.
We also act in international arbitration, including proceedings seated in Switzerland under Swiss procedural law. We advise on tribunal strategy, jurisdiction challenges, interim relief and enforcement of awards, combining the neutrality and enforceability associated with a Swiss seat with specialist English law expertise.
Our approach is focused on resolving disputes decisively while protecting governance stability, commercial relationships and reputational interests across jurisdictions.
Expertise
Art & Heritage Assets
Quastels advises collectors, family offices, foundations, dealers and intermediaries on art and heritage asset matters involving English law. From our Zug presence, we are well positioned to support Swiss based collectors and internationally structured collections where ownership, sale or dispute resolution engages UK law. We act on disputes relating to authenticity, provenance, attribution, title and restitution, as well as contractual conflicts and claims involving misrepresentation within the art market.
Thomas Klemme leads this practice alongside his Private Wealth Disputes work. He specialises in high value contentious trusts and estates as well as art related disputes, acting for individuals, trustees, beneficiaries and collectors in the United Kingdom and internationally. He has experience handling complex and sensitive matters where reputation, discretion and technical precision are critical.
In addition to dispute resolution, we advise on the structuring and governance of art holdings through trusts, foundations and corporate vehicles. Many significant collections held through Swiss foundations or international structures have English law elements, whether through contractual arrangements, succession planning or dispute provisions. We provide strategic advice to protect, preserve and manage art and heritage assets across jurisdictions.
Expertise
International Arbitration
We act on international arbitration matters conducted under English law but seated in Switzerland, offering clients the neutrality, certainty and procedural reliability associated with a Swiss seat. Matters may be managed from our wider international practice while proceedings are formally seated in Switzerland under Swiss procedural law.
This structure provides parties with finality and enforceability while allowing us to engage Swiss qualified lawyers as required for local procedural matters. Our team advises on arbitration strategy, appointment of tribunals, jurisdictional challenges, interim relief, enforcement of awards and settlement negotiations in complex cross border disputes.
