Expert guidance to safeguard your organisation
Who we are
Fraud Sentinel is an innovative training organisation founded by Astraea, Parametric Global Consulting and Learn Interactive. By joining forces, we bring together decades of experience in legal and professional services, investigations, and training for multinational organisations across all sectors.
Experts in Fraud Prevention
We have brought together a team of experts on fraud prevention, forensic investigations and intelligence. With extensive experience in both governmental and private sector environments, our team delivers pioneering training products and services to meet the evolving fraud prevention and compliance needs of our clients.
Fraud Sentinel is a training organisation focused on fraud prevention. Our founding companies, Astraea and Parametric Global Consulting, are able to offer clients additional fraud prevention services, including comprehensive risk reviews and monitoring.
This expertise is brought to life by one of the UK's most innovative learning companies, Learn Interactive. Our team of designers and instructional experts have delivered training programmes for some of the best-known organisations and educational institutions globally.
Meet the Team
Fraud Sentinel draws on the expertise of leading figures in the fields of fraud prevention, legal and professional services and corporate training.
Founders and Senior Management
Nina Stewart
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Nina Stewart is a director and co-founder at Fraud Sentinel and leads on finance, strategy and business development.
Nina is also a founding partner of Fraud Sentinel’s founding company, the legal and professional services firm, Astraea. Nina has driven the development of Astraea’s multidisciplinary service offering and leads on all aspects of the firm’s operations and growth. She is also a co-presenter on Astraea’s special situations podcast, The Crux of the Matter.
Nina brings a wealth of professional service and board-level business experience to Fraud Sentinel. She is a Fellow of the Institute of Chartered Accountants in England & Wales (ICAEW) and a Chartered Tax Advisor (CTA). The early years of her career were spent at a Big 4 firm in London providing international tax advice to large corporates. Since then, she has worked across a range of sectors including oil and gas, financial services and the legal sector.
Nina has served on Boards and Audit Committees in both the private and charitable sectors, including chairing a private-equity-owned oil services business and serving as a trustee on the Board and chairing the Audit & Risk Committee of the NCT, the UK’s largest parenting charity. She is currently on the Board of the London Football Association (London FA), where she serves as the Independent Non-Executive Finance & Risk Director.
Lloydette Bai-Marrow
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Lloydette Bai-Marrow is a director at Fraud Sentinel and leads on the development of its fraud prevention training offering.
Lloydette is a Solicitor Advocate (Criminal) and one of the UK's leading anti-corruption experts, with a focus on serious economic crime. She has over 15 years of experience as a lawyer specialising in investigations and compliance with clients including international organisations and multi-national corporations. Lloydette has worked as a senior prosecutor within both the Serious Fraud Office and the Crown Prosecution Service. She has an exceptional track record in leading and managing complex investigations, providing legal advice and leadership on top tier cases of fraud, bribery, corruption and money laundering in the UK and overseas.
Lloydette is a Senior Visiting Lecturer at the International Anti-Corruption Academy in Vienna, Austria. She holds a number of non-executive board roles, including serving as Chair of Spotlight on Corruption, as a member of the Conduct Committee of an accountancy regulator, and on the legal panel of WhistleblowersUK. She is a reputable international speaker on ethics, compliance, governance and economic crime issues.
Bruno Kavanagh
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Bruno Kavanagh is an experienced corporate learning professional and a co-founder of Learn Interactive and Fraud Sentinel.
Bruno has been a pioneer in the digital learning sector since the mid-1990s. He co-founded ClearPoint Learning Systems, a leading in provider of digital coaching and professional development in the life sciences sector. He led the company from inception to successful exit.
More recently, Bruno has enjoyed a wide-ranging career as a consultant and advisor, including engagements with McKinsey & Co. (where he was part of the launch team for the highly successful McKinsey Academy—with a current user-base of more than 1 million) and Capital One Bank. He has also worked extensively with leading universities in the USA including Georgetown University (Washington, D.C.) and University of Texas at Austin.
Bruno lives between the UK and New York City, where he is an active board member in the non-profit sector. He currently serves as President of Thresh, a performing arts and education organisation working with economically deprived communities, especially young adults, across the USA and internationally.
Piers Rake
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Piers Rake is a director at Fraud Sentinel and leads on the development and delivery of its fraud prevention training offering.
Piers is a solicitor, a CEDR Accredited commercial mediator, a certified fraud examiner, and Forensic Investigator. With a background in commercial litigation, Piers has 20 years of experience helping clients to manage risk, resolve disputes and investigate and respond to allegations or instances of financial wrongdoing. Piers has lived and worked in the Middle East, and has conducted cross border engagements spanning Europe, the Middle East and North & Sub-Saharan Africa. He has particular experience investigating economic crime and advising regulated businesses on their legal and regulatory obligations, having been global head of financial crime Investigations at Barclays Bank Plc.
Piers has led investigations into organised crime networks, high-end money laundering and fraud, in relation to drugs and human trafficking, ‘shadow-banking’ schemes, trade-based money laundering, cash-funnelling, investment and accounting fraud, cross-border corruption, tax evasion and sanction circumvention.
James Ramsden KC
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James Ramsden KC is a senior advisor to Fraud Sentinel, providing strategic counsel on civil fraud and regulatory compliance. He brings particular expertise on cross-border and digital currency fraud.
James is widely regarded as a leading silk in the fields of commercial dispute resolution and civil fraud. James has an expansive international practice in commercial dispute resolution, regulatory, disciplinary, media, sports and public law, serving a diverse clientele of City, corporate, governmental and regulatory clients.
James has represented clients in some of the world’s largest civil fraud cases, including in the Malaysian Sovereign Wealth Fund (1MDB) scandal involving the embezzlement and global diversion of USD 5.6 billion from the fund. He has been instructed in significant international tracing and enforcement cases (including in relation to a USD 1 billion Moldovan bank fraud) and is seen as a leading expert in the investigation and litigation of digital currency fraud.
James lectures widely on Anti-Money Laundering (AML), Counter-Terrorism Financing (CTF), fraud and asset recovery and is author and contributing editor for the authoritative practitioner’s reference, Butterworths’ Financial Regulation Service.
Core Business Team
Marie Sonde
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Marie Sonde leads on business development and growth at Fraud Sentinel.
A transformational leader, Marie leverages her commercial and financial experience to focus on delivering scalable, user-friendly learning solutions that enable customers to comply seamlessly with UK fraud prevention legislation.
As a co-founder of Learn Interactive, Marie uses AI insights to pioneer evidence-based learning solutions to develop clients’ team members and empower smarter decision-making. As co-founder of Fraud Sentinel, Marie is dedicated to helping organisations cultivate a culture of transparency and integrity.
Starting as an auditor, she honed her expertise in financial integrity before excelling in global leadership roles spanning Finance, Operations, and Human Resources. She has been able to put her cross functional skills to good use at Crux Informatics, a startup, and global companies such as Sutherland and IQVIA.
With a passion for aligning people, technology, and purpose, Marie inspires collaboration and delivers transformative outcomes, setting new benchmarks for success across industries.
Tanya Costello
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Tanya leads Fraud Sentinel’s thought leadership and client engagement programme, including designing and producing online and in-person events, articles and podcasts on the topics of fraud prevention and the broader trends driving financial crime.
Tanya currently leads thought leadership and strategy for the special situations legal and professional services firm, Astraea. She is a regular co-presenter of Astraea’s special situations podcast “The Crux of the Matter”.
Tanya brings a wealth of diverse experience to her role. She has extensive experience of political risk consulting, with a specialism in Russia and Eurasia. She has worked with corporate, financial and government clients in New York, Tokyo and London operating across a range of sectors, including oil and gas, mining, and retail. She is also a trained barrister (unregistered) and an accredited civil and commercial mediator. In addition, Tanya has experience in the voluntary sector, most recently monitoring an immigration detention facility for the Independent Monitoring Board.
Graham Edmondson
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Graham is the lead Instructional Designer, responsible for the design and development of Fraud Sentinel's fraud prevention programme
Graham has almost 30 years of experience in Learning and Development, mostly with top tier consulting firms. He has a deep understanding of how to design and create highly engaging, interactive learning solutions, along with a comprehensive understanding of how to drive measurable performance improvement.
He has managed consulting projects in Financial Services, Professional Services, Manufacturing, and the Public Sector and he has worked with a range of clients across the United States as well as projects in Europe, South-East Asia, Australia, and Africa. He holds a B.A. (Hons) in Law and also possesses a degree in Psychology.
Graham splits his time across the UK, Spain and the US, and is a passionate football supporter, and an aficionado of Americana music.
Trainers
Heather Wurster
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Heather Wurster is a fraud prevention trainer at Fraud Sentinel.
Heather is an experienced regulatory training professional accustomed to creating high impact, successful outcomes. She has worked with financial institutions in many different roles and geographies: Heather led global training roll outs for a tier 1 bank to help it deliver against a Deferred Prosecution Agreement (DPA) and has acted as a consultant for a UK retail bank, working with their Ops Team to implement change to ensure regulatory enforcement measures were not necessary.
Whilst managing projects, working within programmes and managing training teams, Heather has developed strong, practical knowledge of governance and risk controls. A consistent thread throughout Heather’s career has been a focus on how to embed ideas, processes and behaviours in the workplace to achieve a change in outcomes.
Heather has written risk management standards for a US global bank and worked for regulators based in the UK and overseas. She has experience throughout large organisations, from Board leve, through to new hires.
In between periods of freelance work, Heather was employed by the International Compliance Association between 2019 and 2024, where she was Global Lead for Customer Due Diligence (CDD) and Global Lead Designate for Governance Risk and Controls.
Andrew Clarke
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Andrew Clarke MA, FICA is a fraud prevention trainer at Fraud Sentinel. He has extensive experience in combating fraud. A former police detective, he investigated complex cases involving individual, corporate and government frauds committed by criminals ranging from professional enablers to corrupt politicians. Utilising that experience, he specialises in creating and delivering fraud risk management courses and providing businesses with compliance support.
As Global Lead for financial crime at the foremost international compliance training provider, he was responsible for delivery to staff across all sectors, government and law enforcement.
At a strategic level, he has worked on global projects with the United Nations, World Bank and IMF, including a UNODC project to train prosecutors from developing countries in how to trace and recover the proceeds of kleptocratic fraud and grand corruption.
Get in touch.
We can help you build a culture of compliance and demonstrate the necessary commitment to fraud prevention. Contact us to discuss the most appropriate training programme for your organisation.