Kate is a specialist, dual-qualified prosecutor. Prior to founding Edmonds Marshall McMahon, Kate prosecuted for the Serious Fraud Office (SFO) where she worked as a senior lawyer on some of the UK’s largest criminal prosecutions, including the “Innospec” case. This was the first global settlement in the UK and involved systemic corruption by a UK/USA company in Iraq and Indonesia. The case resulted in a US$12.7 million fine in the UK and a US$14.1 million fine in the USA and successful prosecutions of the Company Directors and employees. Kate now specialises in cases involving serious fraud, serious and violent crime, international crime and perverting the course of justice.
Kate is known for her incisive analysis and strategic vision, having had conduct of large fraud, corruption and trademark cases. She is highly regarded by her clients and has a reputation for being extremely determined and driven in all her cases. She has been described as an “outstanding prosecutor” who provides “intellectual leadership”. She is praised for her “high intelligence, tactical acumen and great client care skills.”
In 2018, Kate was recognised as an international “thought leader” by the “Who’s Who Legal: Asset Recovery” guide which lists the world’s leading asset recovery lawyers. She is described as “one of the best”. In 2017, “The Lawyer” recognised Kate as one of the “Hot 100” Lawyers in the UK. This award acknowledges the “best lawyers in the UK- the most daring, innovative and creative“. She was also singled out by “Who’s Who Legal 2017” as an “outstanding practitioner” in the field of asset recovery. In 2017, Kate was also invited to become a member of “Fraudnet”, the world’s leading asset recovery network.
She has spoken at the leading European Fraud Conference, C5 in Geneva (2015; 2018) and USA’s leading C5 “Fraud and Asset tracing” Conference in Miami (2015). She has been interviewed on the BBC news and appeared on BBC Radio 5 Live and “Drive Time” to discuss criminal court charges (August, 2015). She appeared on BBC2’s Victoria Derbyshire show to discuss Cameron’s anti-corruption pledges (May 2016). She was interviewed recently by Ian King on Sky News (August 2018). She is often quoted in the FT and national press (including the Independent). Kate is currently one of the selected solicitors to act together with the Government in a new City of London Police initiative to tackle fraud.
What the directories say:
Kate is a recommended individual in Legal 500 – Fraud: White-collar Crime and Chambers & Partners – Financial Crime: Private Prosecutions in London
“She is utterly committed and will go the extra mile for her clients. She is a great lawyer.” Chambers & Partners (2021)
“simply the best at what she does; fearless, hard-working and imaginative”. Legal 500 (2020)
“an incredibly imaginative litigator,”; “She understands the background of a problem and is very smart.” Chambers & Partners (2019)
“regularly called upon to represent clients in private prosecutions, with particular expertise in fraud cases.” Chambers & Partners (2019)
“Founder Kate McMahon is a well-established name in the market with an excellent track record in high-profile confiscations. As one interviewee maintains, “She is creative and aggressive in a careful and measured way, and is able to distil complex matters and convey a joined-up solution quickly and coherently.” Who’s Who Legal (2017)
‘a fearless and energetic prosecutor’ who has ‘a relentless commitment to justice’ Legal 500 (2016)
“formidable adversary” Legal 500 (2014)
- A number of high-profile, high-value international “boiler room” frauds operating across a number of countries, involving thousands of victims;
- Significant experience in the area of confiscation, having obtained significant confiscation orders and acted on behalf of third parties intervening for significant amounts;
- Successfully conducted many large-scale fraud trials, including the famous “transit thefts” of pharmaceuticals in transit from EU factories to wholesale dealers in the UK;
- Successfully acting for a leading corporate in relation to a CEO fraud and prosecution (considered to be the largest in the UK); now proceeding to confiscation;
- Successfully acting for a Middle Eastern Company and Company Director in relation to a $USD175.5 million infrastructure contract fraud (including recouping legal costs);
- Successfully acting for a US hedge fund in relation to a $USD30 million fraud committed by a financial institution (including recouping legal costs);
- Successfully acting for a Canadian victim in a €500k trading fraud (including recouping legal costs, where all other victims had failed to achieve recovery);
- Successfully acting for a high profile, international airline company defrauded by employees (including recouping legal costs and compensation for the Company);
- Successfully prosecuting a defendant for a false adverse possession claim in a private prosecution for perverting the course of justice (value approximately £750k);
- Successfully acting for the parents of a murdered child against the police after a high profile murder case;
- Successfully acting for a former partner of a city law firm in an SRA referral and subsequent strike off. Presented allegations of fraud and money laundering to the regulator;
- Advised PCP Capital Partners LLP in relation to matters involving investment banking and financial advisory services;
- Currently acting for a leading hedge fund in relation to an international dispute worth some $2 billion;
- Currently acting for an international hedge fund in relation to fraud in a patent matter;
- Currently acting for a wife who is involved in a high-value and high-profile divorce, where the husband has lied about ownership of assets to defraud his wife (approximately €40m);
- Currently acting for a number of individuals in relation to investment frauds, such as gold investment, carbon credits scheme, hotel development and international land ownership schemes.
- Kate comments on ‘potential fraud’ as car dealer Lookers reveals £19m hole
- Insurance Age: the use of private prosecutions in the fight against insurance fraud
- Fast global fiscal response in a crisis
- Romance Fraud in Covid-19: Just Swipe Right
- EMM Networking Masterclass: How to meet, greet and enjoy it!
- EMM successfully secure convictions in the largest corporate private prosecution
- Financier Worldwide: Are the sands of trust law shifting?
- Review of multiple causes of action (Holyoake and another v Candy and others)
- Risky Business: Hacking, data theft, rogue employees and Corporate Protection in a Digital Age
- Kate appeared on BBC2 commenting on David Cameron’s Global Anti-Corruption Summit 2016
- Kate appeared on BBC Radio 5 Live this morning to speak about court costs to guilty defendants
- Kate featured in the “Sunday Post” (Scotland) discussing the role private prosecutions could play in the Glasgow “Bin Lorry” Case
- Kate quoted in the Financial Times ‘Private Prosecutions grow as state bodies retreat in face of dwindling resources’ on 27 July 2014
- Kate on the growth of the private prosecution market in the Financial Times (20 November 2014)
- Kate on the BBC News, speaking on the regulation of Private Investigators
- How to catch a Fraudster: When private prosecutors should seek to use civil tools, such as a Norwich Pharmacal Order (NPO)
- Tool up to fight the fraudsters: Private Prosecutions
- Court of Appeal’s judgment on private prosecutions and confiscation – R (Virgin Media Ltd) v Zinga  EWCA Crim 52
- Prosecutions to the People
- Private Prosecutions: History, Present Future
- Kate McMahon speaking to the CFLA about “the privatisation of criminal law and its impact on civil fraud claims” on 21 September 2015
- Kate invited to speak about private prosecutions at Europe’s Leading Legal Conference on Civil Fraud Investigations, Litigation and Asset Recovery – C5, Geneva, 19–20 March 2015
- Kate speaks at the IBA Conference in Paris
- Kate featured in The Lawyer’s Hot 100!
- In 2015, Kate was voted “Best Female Fraud Lawyer – UK” by the Corporate LiveWire Awards. This award selects winners based on their achievements and strengths.
- In 2015 she was recognised by the ‘Women in Law Awards’ (The Lawyer Monthly) for her wide ranging success in the field of private fraud prosecutions.
- The Law Society
- Proceeds of Crime Lawyers Association (POCLA)
- Fraud Lawyers Association (FLA)
- Fraud Advisory Panel
- FraudNet (ICC)