Relationships of the future will be increasingly governed by code and data.

For decades we have specialised in advising our clients on various asset classes and the relationships that govern them. As the world evolves so does the extent of our advice.

We are now fully engaged with our clients in working through their digital strategies whether involving blockchain technology, smart contracts or NFTs.

Legal advice is just one part of the story and in addition we work with an integrated team of non-legal specialists to assist our clients in the technical and strategic implementation of their intended outcomes.  

We identify five primary areas of interest to achieve peace of mind for our clients in this space:
  • Protection – pre-emptively protecting assets and brands in the digital world
  • Enforcement – where your rights or interests are challenged, we will protect them
  • Access – understanding how to find entry points and opportunities in this burgeoning marketplace
  • Continuity – evaluating your current digital presence and understanding how to remain relevant and compliant, so that you can operate effectively by considering licensing and regulatory issues
  • Enhancement – maximising and monetising brand value and assets in the digital world
Within these areas, our legal expertise covers:
  • Smart contracts and licensing
  • DAOs
  • Brand protection and enforcement
  • Compliance and data security
  • Statutory regulation
  • Tax for individuals and companies
  • Jurisdictional issues

Jonathan Gross

Ben Rosen

Ben Rosen


Jonathan Gross

Jonathan has more than 30 years experience and continues to practice commercial real estate law although in recent years he has become more interested in the protection and development of asset classes in the digital world.

As legal adviser to some of the UK’s largest family offices, private companies and entrepreneurs he is trusted by his clients for his depth of experience in investment, joint ventures and his ability to effect introductions at the highest level. He is also particularly active with clients involved in the arts and finance.

Regarded by his loyal clients as a deal maker his clients rely upon him for his tactical and strategic approach to getting things done.

Formerly at Allen & Overy and SJ Berwin & Co. Jonathan co-founded Quastels with David Quastel in 1998 and is actively involved in the practice management of Quastels .

He has a degree in law from City Business School and Trinity College, Cambridge.

Tel:+44 (0)20 7908 2544

Ben Rosen


Ben Rosen

Ben is a versatile and commercial-thinking Partner who brings to Quastels a broad range of experience in advising individuals, families and companies, both UK and international, on UK tax, trust and succession planning matters.

His expertise includes tax advice on:

  • Real estate
  • Shares (acquiring, owning and disposing company shares) and partnership
  • Wills, trusts and Lasting Powers of Attorney
  • Residence and domicile issues
  • Lifetime tax planning
  • Pre-arrival tax planning for international individuals and families
  • Cryptocurrencies, NFTs and digital landscape

Ben is a member of the Law Society’s Tech London Advocates Blockchain Working Group.

Ben has a commercial and personal outlook in his approach to technical issues faced by individuals and families, seeking to find a sensitive balance between the human and financial considerations faced by many clients.

Tel:+44 (0)20 7908 2530