Jan Putnis > Slaughter and May > London, England > Lawyer Profile

Slaughter and May

Living Wage

Work Department

Financial Regulation
Financial Institutions Group
Asset Management
Banking and Finance
Corporate and M&A
Global Investigations


an is Head of our Financial Regulation Group and a member of our Financial Institutions Group.

Jan’s practice focuses on matters of strategic importance to financial institutions, with particular emphasis on regulatory advice (both contentious and non-contentious) and multi-jurisdictional corporate and commercial transactions. He acts for a broad range of financial institutions, including banks, investment banks, brokers, insurance and reinsurance groups, market infrastructure operators and asset managers.

Jan is on the firm’s Brexit Committee with responsibility for financial services. He is at the forefront of the industry’s thought leadership on the impact of Brexit. This includes working with several industry bodies, such as TheCityUK and UK Finance.

Jan has been recognised as a leading individual in the ‘Financial Services: Non-contentious Regulatory’ section of Chambers UK, and is the contributing editor of The Banking Regulation Review (Law Business Research, since 2010). He is a regular contributor to PLC Magazine and is a member of the Financial Markets Law Committee.


Trained at Slaughter and May; qualified in 1996; associate from 1996-2003; partner  since 2003.


Law Society, Financial Markets Law Committee


Netherhall School, Cambridge; University College, Oxford (1992 MA Physics); College of Law, London (1993 CPE).


Scuba diving, Italian culture.

Lawyer Rankings

London > Corporate and commercial > Financial services: non-contentious/regulatory

(Hall of Fame)

Jan PutnisSlaughter and May

Slaughter and May‘s team advises EU and UK banks, insurers and investment firms across the spectrum of their regulatory requirements, with a particular aptitude for assisting with the regulatory aspects of M&A deals. The group has been heavily involved in advising clients on their Brexit-related adjustments, as well as on the implications of Covid on financial regulation. The department is led by Jan Putnis, who has carved out a niche advising global banking groups on Brexit-related issues. Ben Kingsley is a co-head of the firm’s emerging tech and fintech practice, where he brings to bear his financial regulatory expertise. Nick Bonsall is a financial markets expert with a varied client roster of banks and insurers. Senior counsel Kristina Locmele is often called upon to support M&A transactions, utilising her expertise in consumer credit and payments regulation.