Mr Michael Castiel > Hassans > Gibraltar, Gibraltar > Lawyer Profile

Madison Building
GX11 1AA

Work Department

Corporate & Commercial.


Michael is a Consultant at Hassans and a member of its Corporate and Commercial department. 

He specialises in international tax, corporate and business law. Michael’s expertise also extends to corporate restructuring, joint venture work, mergers and acquisitions, franchising law and insolvency, often advising both receivers and liquidators in high profile cases.

Michael regularly advises major US, Canadian and European multinationals on setting up innovative structures and operations, as well as the structuring of cross-border transactions.


English, Spanish, French and Portuguese.


Having studied law at London University and at the Inns of Court School of Law, Michael was called to the English and Gibraltar Bar in 1993. In addition to his legal training and management and business administration qualifications, Michael also has eight years’ UK industry experience.

Lawyer Rankings

Gibraltar > Tax

(Leading individuals)

Michael CastielHassans

Hassans is consistently engaged on high-profile tax matters; the team acts for private individuals, companies and the Gibraltar government on a range of matters. In recent years, the firm has been involved with the development of tax laws in the country and has advised on the drafting of various pieces of legislation. The depth of the team is also highly impressive; Grahame Jackson advises on international property investment structures, while Michael Castiel assists with cross-border insolvency issues.

Gibraltar > Commercial, corporate and M&A

(Hall of Fame)

Michael CastielHassans

Undeniably the leading firm for commercial matters, Hassans advises both Gibraltar-based and international corporate clients from a range of industries. The group is notable for the  depth of its senior team; James Levy advises on M&A transactions and real estate acquisitions, while Vikram Nagrani, as co-head of the fintech practice, assists with commercial transactions in the technology space. Abigail Cornelio handles transactions relating to natural resources and mining in emerging markets. Michael Castiel and Peter Montegriffo QC are both vastly experienced in commercial matters.

Comparative Guides

Gibraltar: Mergers & Acquisitions March 2021 This country-specific Q&A provides an overview to Mergers & Acquisitions laws and regulations that may occur in Gibraltar.