Edmonds Marshall McMahon > London, England > Firm Profile

Edmonds Marshall McMahon

Crime, fraud and licensing > Private prosecutions Tier 1

Specialist private prosecutions firm, Edmonds Marshall McMahon has a considerable share of the market, representing individuals, including international high net-worth individuals, and corporate clients in bringing private prosecutions relating to all types of crime, both financial and general, and also providing defence and investigative advice. The firm has represented clients in largescale fraud and asset recovery cases, as well as proceedings relating to bribery, corruption, cyber crime, and enjoys strong relationships with UK and international courts and enforcement bodies, as well as enjoying a steady stream of referrals from international law firms. The practice is headed by founding partners and experienced prosecutors Tamlyn Edmonds, Kate McMahon , and Andrew Marshall .

Practice head(s):

Tamlyn Edmonds; Kate McMahon; Andrew Marshall

Other key lawyers:

Mike Jackson


EMM are to my mind the go-to firm in London for private prosecutions. Very assured and knowledgeable with unrivalled experience.

Kate McMahon is very impressive and a pleasure to work with. Mike Jackson is an extremely effective investigator.

We have worked with EMM for many years on numerous cases, and they are by far the leaders in the private prosecution market.’

The lawyer who continues to stand out and impress is Tamlyn Edmonds. This is constantly demonstrated by her expertise, professionalism and knowledge, particularly as it relates to private prosecutions. Her commitment to her clients is total and unwavering, along with her ability to meticulously work through the most difficult and complex cases, translating these into language that is understandable to those not in the legal profession.’

EMM are without doubt the legal sector experts in Private Prosecutions. Every member of staff that I/we have dealt with is knowledgeable, skillful and dedicated to providing an impeccable top quality service, supported by the latest technology and contacts.’

Tamlyn is highly personable, responsive, always ready to assist and provides clear and straightforward advice – frankly she’s invaluable.

Andrew Marshall, Tamlyn Edmonds and Kate McMahon are the leaders in this field. Each exceptional.’

Tamlyn Edmonds is a great communicator, highly focused on the detail whilst seeing the bigger picture she manages the team around her effectively.’

Key clients

Macmillan Cancer Support

JUUL UK Holdco Ltd

Hunter Worldwide Premium Sourcing Ltd

TM Eye Ltd

DAS UK Holdings Ltd

Cyrith Limited

Work highlights

  • Represented Swiss/French high net worth individuals  in the successful (and highly publicised) private prosecution of a well-known property tycoon arising from a failed luxury property redevelopment.
  • Represented a Kazakh businessman in respect of the successful private prosecution of a Russian/British national arising from a multi-jurisdictional fraud in Hong Kong using “fake” Standard Chartered bank ATMs.

Edmonds Marshall McMahon is the first and only specialist private prosecution firm in the UK. The firm’s experience, expertise and contacts in the criminal justice system are unrivalled. Edmonds Marshall McMahon prosecutes a wide range of offences, and advises companies with fraud and criminal issues, supervising investigations, and assisting law enforcement both nationally and internationally. The firm also has leading civil fraud practitioners.

The firm: The firm’s success thus far has been created by a private, high-powered team of senior prosecutors with an unrivalled track record in conducting major fraud prosecutions and regulatory work. The criminal side of the firm is staffed by highly experienced prosecutors and investigators and offers tailor-made prosecution services, from advice and investigation through to criminal proceedings and confiscation and enforcement.

The firm provides able to provide a total solution to fraud, advising clients on the best means of retrieving assets in frauds that are linked to the UK, whether by civil asset retrieval or criminal confiscation order.

All partners have significant reputations in their fields.

Edmonds Marshall McMahon has had a number of highly publicised successes, obtaining the highest sum awarded in confiscation and compensation proceedings undertaken by a private prosecutor – £38m; largest ever corporate private prosecution; private prosecution resulting in conviction of a Russian national for fraud; private prosecution resulting in the conviction of a financial controller for fraud.

Types of work undertaken
Counterfeit prosecutions: The increase in counterfeiting has staggering financial implications for businesses; all companies with a brand to protect must seriously consider this growing market. Edmonds Marshall McMahon’s unique service means the firm will investigate (or work with investigators), advise, prosecute and robustly enforce any compensation and/or confiscation order for its clients, ensuring compensation for them.

Fraud prosecution: Since inception, Edmonds Marshall McMahon’s focus has been on assisting companies or individuals that have been the victims of complex fraud. The firm assists in either recovering money or privately prosecuting and deterring fraudsters. The firm commonly deals with fraud in joint venture contracts; fraud in commercial contracts with banks and financial institutions; theft, fraud, dishonesty or money laundering; loan, insurance and mortgage fraud; data theft by employees; and internal fraud.

Civil fraud litigation: In some cases of fraud and breach of trust it may be more appropriate for clients to choose civil litigation, particularly where a criminal prosecution may prove more difficult due to difficulties in establishing particular offences. Civil proceedings are designed to effect a recovery and many of the firm’s clients will regard this as reflective of their overall objective. The firm can now offer an unrivalled service in both criminal and civil fraud proceedings.

Advisory and regulatory: All directors of Edmonds Marshall McMahon have extensive experience in the area of regulatory law, having advised and prosecuted for the Medicines and Healthcare Products Regulatory Agency (MHRA), Department for Food, Environment and Rural Affairs (DEFRA), Health and Safety Executive (HSE) and the Environment Agency. The firm has also advised pharmaceutical companies and medical device manufacturers on the medicines and medical devices licensing regime. The background of the firm’s directors and senior lawyers enables the firm to give comprehensive, commercial and relevant advice.

Managing Partner Tamlyn Edmondstamlynedmonds@emmlegal.com
Partner Kate McMahonkatemcmahon@emmlegal.com
Partner Andrew Marshallandrewmarshall@emmlegal.com
Partner Ashley Fairbrotherashleyfairbrother@emmlegal.com
Counterfeit prosecutions Tamlyn Edmonds
Counterfeit prosecutions Kate McMahon
Counterfeit prosecutions Andrew Marshall
Fraud prosecutions Tamlyn Edmonds
Fraud prosecutions Kate McMahon
Fraud prosecutions Andrew Marshall
General crime Tamlyn Edmonds
General crime Kate McMahon
General crime Andrew Marshall
Investigations and confiscation Tamlyn Edmonds
Investigations and confiscation Kate McMahon
Investigations and confiscation Andrew Marshall
Perverting the course of justice Tamlyn Edmonds
Perverting the course of justice Kate McMahon
Perverting the course of justice Andrew Marshall
Advisory and regulatory Tamlyn Edmonds
Advisory and regulatory Kate McMahon
Advisory and regulatory Andrew Marshall
Civil fraud and asset tracing Ashley Fairbrother
Contentious trusts Ashley Fairbrother
Tamlyn Edmonds photo Tamlyn EdmondsTamlyn is a founding Partner of Edmonds Marshall McMahon.  She specialises in…
Andrew Marshall photo Andrew MarshallAndrew is currently a director at Edmonds Marshall McMahon having led the…
Kate McMahon photo Kate McMahonKate is a specialist, dual-qualified prosecutor. Prior to co-founding Edmonds Marshall McMahon,…
Number of UK partners : 5
Number of other UK fee-earners : 22

TESTIMONIAL: We have instructed Edmonds Marshall McMahon since 2015 in a large value, complex and sensitive fraud. The partners with conduct of the matter have been Kate McMahon and Andrew Marshall. Throughout the process, which has been a difficult investigation, hard fought litigation and contested confiscation, they have both been extraordinarily committed, resourceful and unwaveringly determined on our behalf. I would wholeheartedly recommend them to any other corporate seeking to prosecute a fraud.

CLIENT: Senior Police Officer
TESTIMONIAL: We have instructed Edmonds Marshall McMahon since 2018. Kate McMahon and her team (Andrew Marshall, Jane Guthrie, Mike Jackson and Charles Fleury) have impressed since beginning their project with us. Kate’s dynamism, commitment and drive has been instrumental in assisting us. Her team are experts at investigations with an enormous amount of complex SFO corruption investigation experience behind them, which has been essential in this project. They are an incredible team.

CLIENT: Ian Horrocks
TESTIMONIAL: We have worked with Edmonds Marshall McMahon since 2014 on a range of matters involving large scale and complex multi-jurisdictional fraud. We have primarily worked with Tamlyn Edmonds, as well as other members of EMM, including Ashley Fairbrother and Fani Gamon. They are clear leaders in the field of private prosecutions and are committed, approachable and imaginative. Tamlyn is a highly experienced prosecutor who is determined to achieve justice for her clients. I would strongly recommend EMM in any case involving complex fraud.

CLIENT: Vince Tickel
TESTIMONIAL: We instructed Tamlyn Edmonds of EMM in a large fraud case. EMM are leaders in private prosecutions for fraud and I only really understood the depth of expertise as the process unfolded. They knew what was coming up next, and with wise thought through strategies they took each step forward with smart interventions and were supportive at all stages. The team has in-depth strength so you have clever, dedicated people at each level. I wouldn’t wish fraud on anyone but if it happens to you, you’ll need experts helping you get justice and that’s exactly what EMM are.

TESTIMONIAL: TM Eye have been instructing Edmonds Marshall McMahon since 2013 and together we have prosecuted hundreds of cases relating to intellectual property crime with a 100% conviction rate. We work mainly with partner Tamlyn Edmonds along with associates Ashley Fairbrother, David Nixon, Matthew Edwards and Fani Gamon. Tamlyn and her team are client focussed and always provide an exceptional service. They are committed to coming up with creative solutions to difficult and often complex issues and I would recommend them highly in any criminal case and matters relating to confiscation.

CLIENT: Current Client – Anonymised
COMPANY/FIRM: Anonymous due to ongoing case
TESTIMONIAL: My firm engages a number of law firms in London to act in both civil and criminal matters. We engaged EMM in 2017 to work on a prospective private prosecution when there were also ongoing civil proceedings in respect of a multi-million pound fraud. It was clear to me from an early stage in the mandate that their specialist knowledge of private prosecutions is second to none.

Andrew Marshall has a huge amount of experience and clients benefit from him being both a barrister and law firm partner. He provides sensible and fearless advice which he is prepared to stand behind when the going gets tough. He is also very strategic.

Tamlyn Edmonds’ experience as a former prosecutor provides an extremely useful perspective and check on the proposed strategy. She is great at finding solutions to perceived problems and provides first class client service. She is also very commercial which is helpful given our mandates usually involve commercial fraud.

CLIENT: Corporate Client (client cannot be named as case currently ongoing)
TESTIMONIAL: We instructed Edmonds Marshall McMahon in 2017 to assist in a significant and complex fraud where we had previously instructed solicitors who we were dissatisfied with. The team, lead by Kate McMahon (assisted ably by Jane Guthrie, Penny Brown and Mai Holdom) have led an aggressive, analytical and creative investigation. They have been meticulous and dedicated in all of the work they have undertaken on our behalf and they have moved extremely quickly in all areas. I would highly recommend this firm as a private prosecution firm in all fraud matters. Their client service is also brilliant.

CLIENT: Lefi Tsiattalou
TESTIMONIAL: Andrew Marshal leads a forceful and very organised team at Edmonds Marshall McMahon. The service which is provided is the “Rolls Royce” of private prosecutions from the moment you walk through the door and throughout the various stages of proceedings.

Andrew himself has a forensic mind and his attention to detail is exemplary. His strategic planning ensures that all permutations in the progression of the case are carefully considered in order that ‘nothing is left to chance’. There are simply no unforeseen events with Andrew leading the team.

Andrew is a specialist in taking instructions, identifying and crystallising all the issues central to the case. He is dynamic leading his team and formidable with the opposition and this combination is highly effective in complex and difficult cases.

CLIENT: Brian de Clare
TESTIMONIAL: I have been working with both Kate McMahon and Andrew Marshall for over a year on a major claim we have brought. Over that period of time the advice, service and (I have to admit) above all, their patience they provided us with was of a quality that comes at the top end of the range of the many law firms and lawyers we have used over the last decade. I have no problem recommending either one of these individuals to any prospective client.