JMW launches Signature – specialist legal services for ultra-high net worth individuals and family offices

12th December 2025, 9:48 am

JMW, the full-service law firm with offices in Manchester, London and Liverpool, has launched a new specialist offering: JMW Signature, catering to the complex needs of ultra-high net worth (UHNW) clients and family offices.

Led by family law partner Ruben Sinha, JMW Signature will focus on both private and business issues and will be strategically aligned with teams at the firm which operate in the fields of tax and succession planning, trusts, foundations for family assets, corporate structures, real estate and family law issues as well as other areas where those clients require legal expertise.

The Signature team works closely with handpicked accountants, CSPs, private banks and trustees in order to provide the bespoke knowledge and capabilities vital to meeting the needs of Family Offices and international families on the complex issues they may face at any time.

JMW’s Head of Business Development, Stuart Cartwright, explained: “Unlike many others in the legal industry, we are a truly full-service law firm so can deliver expert advice and guidance across multiple related sectors in an entirely seamless fashion.”

Ruben Sinha joined JMW in 2022 and has spent most of his career in top-ranked family teams at leading City and international law firms in both London and Hong Kong. He has acted for many UHNW and high-profile families in cases with assets between £100m and £1bn+, and is primarily focused on complex, international, divorce cases and asset protection.

He said: “We have seen a substantial increase in instructions from UHNW and family office clients seeking carefully crafted strategies designed to protect their private wealth.

“In addition, Signature’s corporate and real estate experts are advising these clients on transformational business structures, including acquisitions, reorganisations, or exits.

“A full-service law firm providing highly specialised advice which is tailored to the unique needs of UHNW and family office clients is already proving to be a winning combination.”

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