Iain Mackie Partner

Iain specialises in large-scale corporate and financial services litigation and arbitration for a mix of UK and international corporate clients, private equity houses, family offices and financial institutions.

Iain is well known in the market for his expertise in handling complex corporate litigation, including large shareholder, joint venture and post-transaction disputes. He also advises on fraud issues; the rights and obligations of directors; derivative actions and unfair prejudice petitions; insolvency issues and restructuring. Much of his work is of a multi-jurisdictional nature and he has particular expertise in matters involving private equity investments and entrepreneurs. 

He acts for banks, financial institutions and fund managers in relation to disputes concerning fund and asset management, lending/security, complex financial instruments (particularly derivatives), trade finance and internal investigations. He has extensive experience of regulatory investigations by the FCA and other regulators, both in the UK and elsewhere, and advises on market abuse and compliance issues.

He is regularly involved in advising non-UK clients involved in English law disputes, particularly in relation to international arbitrations concerning commercial and corporate matters, and in dealing with complex cross-border litigation.

Iain was head of the litigation and dispute resolution group for 12 years, and he is now focusing solely on client work.

What people are saying


"Iain Mackie: always on top of what the client wants and needs; clever, astute, savvy, with excellent judgement."

The UK Legal 500 2022

"Iain Mackie exhibits discipline, patience and thoughtfulness, even in difficult situations where the stakes may be high."

Chambers UK 2022

"He is incredibly shrewd and a pleasure to work with... Iain shows calm, collected leadership."

Chambers UK 2022

"Iain Mackie is known for handling complex corporate litigation, including large shareholder and post-transaction disputes. "His attention to detail is legendary," one source notes, while a client describes him as "an astonishing intellect" and adds: "For litigation, there is no lawyer I'd rather go into battle with."

Chambers UK 2020

"Iain Mackie is a well-connected partner, with very high profile work."

The Legal 500 2019

"Iain Mackie offers robust advocacy and advice to clients in a range of corporate disputes."

The UK Legal 500 2019

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