Kathleen Harris is head of the London office of Arnold and Porter. Kathleen is recognised internationally as a leader in her practice area and is regularly instructed by companies and individuals in a range of high-profile regulatory and criminal matters. Kathleen also serves as the Co-Chair of the firm's Diversity & Inclusion Committee.

Kathleen is recognised internationally as a leader in her practice area. She represents a FTSE 100 Company in relation to a financial fraud case and another FTSE 100 Company in relation to a global investigation. Her representations include GSK, Hewlett Packard, News UK and individuals in relation to investigations into Barclays, Rolls Royce, and Tesco. She is regularly instructed by companies and individuals in a range of other high-profile criminal matters. Kathleen also provides advice in respect of both compliance and enforcement relating to financial and trade sanctions. Kathleen is a highly respected practitioner in all areas of crime and her pro bono work includes acting for vulnerable individuals within the criminal justice system.

In The Legal 500 she is recognised as having a "very keen intellect." Chambers and Partners has recognised her as a leading individual in her field. She is an accomplished litigator with extensive knowledge of and experience in matters involving internal and external investigations and prosecutions under the full range of potential criminal offences and sanctions. Kathleen has broad experience advising government ministers on the development and implementation of policy and fraud strategy, and leading complex overseas enquiries and analyses.