Joanna Dimmock

Partner, London


“Joanna Dimmock is undoubtedly the future of white collar crim defence; she displays exceptional intellect, tactical know-how and remarkable commitment to her clients”
Legal 500 UK


Joanna Dimmock is a partner in the White Collar team in London. Joanna joined White & Case in October 2015 from a leading law firm.

Joanna has broad experience across a wide range of white collar related areas. Many of her cases have an international dimension and she has particular experience of multi-jurisdictional investigations, including bribery and corruption and cartel investigations undertaken by authorities in both the UK and abroad (SFO, SOCA, Arab Republic of Egypt, DOJ, Canadian Competition Bureau), as well as complex extradition, Interpol red notices and mutual legal assistance matters.

Joanna also has considerable experience in the field of international sanctions, having represented individuals facing restrictive measures, as well as corporations requiring compliance and litigation advice arising from the enforcement of sanctions by the European Council, OFAC and the Swiss Federal Council.

Joanna is recognised by Who's Who Legal 2019 as a future leader in Investigations and Crime Defence: Individuals, and was one of four lawyers across EMEA to be rated as 'most highly regarded'. Joanna is also ranked as an 'Up and Coming' Lawyer in Chambers UK 2020 for Financial Crime: Corporates and Financial Crime: Individuals, as well as being listed the Global Investigations Review Top 100 Women in Investigations in 2018. Legal 500 UK 2020 describes her as 'an incredibly bright, excellent lawyer and inspires trust in her clients'.

Bars and Courts
England and Wales
London School of Economics and Political Science
University of York


As an indication of Joanna's experience prior to joining White & Case, her experience includes:

Advising a former trader in relation to a multi-jurisdictional investigation brought by the DOJ and SFO involving allegations of anti-competitive behaviour and fraudulent conduct.

Acting for a major Middle Eastern businessman in relation to his de-listing from international sanctions lists and in respect of criminal charges for corruption and money laundering, global freezing orders and an Interpol red notice in numerous jurisdictions, including the UK, Egypt, Canada, Switzerland and the Cayman Islands.

Acting for a former Egyptian Minister and his wife in relation to their de-listing from EU restrictive measures pursuant to criminal charges for bribery and corruption. This included representing the client in proceedings brought before the European General Court and associated judicial review proceedings before the UK Administrative Court.

Drafting bribery and corruption and global sanctions policies for a large corporate.

Acting for a senior executive of a leading global freight forwarding company in relation to an antitrust investigation brought by the DOJ and Canadian Competition Bureau in relation to allegations of fixing the level of surcharges on freight carried by air, sea and land.

Acting, whilst in house at the FCA, in relation to an insider dealing investigation, which was, at the time, the FCA's largest and most complex investigation to date. This included advising pre-charge on the sufficiency and continuity of evidence and the investigation process in relation to a multi-handed insider dealing prosecution brought by the FCA.

Awards and Recognition

Named in GIR's Top 100 'Women in Investigations'
Global Investigations Review 2018

Who's Who Legal – Future Leaders 2018
"a highly respected name in international investigations spanning multiple jurisdictions. Her expertise in bribery and corruption, cartel investigations and extradition matters makes her highly sought after by clients."