Due diligence

Counterparty and partner due diligence services

Before you invest, appoint a partner or enter a new market, understand who you are dealing with. Our due diligence services in London provide structured research into corporate background, ownership and integrity risks. Work is available across the UK, Europe and North America, with the scope shaped by the decision you need to make.

Why work with us

Melpomeni Kalliri brings forensic accounting qualifications, North American banking experience and a background within European institutions. This supports a perspective that considers financial information alongside policy and commercial context. Reports separate verified records from allegations, explain source limitations and identify questions that warrant further investigation before a decision is taken.

Corporate background

Research corporate history, ownership and control structures, directors and relevant connected entities using available records.
Identify inconsistencies or gaps in information supplied by the counterparty and set out questions for clarification.

Integrity & reputation

Review relevant public reporting, accessible litigation records and other sources for issues affecting reputation or integrity.
Assess findings in context, recognising that adverse reporting is not itself proof of wrongdoing and sources may be incomplete.

Transaction context

Tailor partner or pre-investment due diligence to the proposed relationship, its jurisdictions and the consequences of the decision.
Review available financial information for inconsistencies and flag areas that require accounting, legal or other specialist assessment.

Reports & briefings

Receive a concise summary supported by source references, material findings and a clear account of research limitations.
Discuss unresolved questions and proportionate follow-up steps. Team briefings can support a more consistent approach to third-party review.

Who we work with

Companies & investors

For business owners and investment teams evaluating a supplier, commercial partner, target or other significant relationship.

Law firms & advisers

For advisers seeking structured background research to inform client decisions on cross-border transactions or counterparties.

Individuals & new entrants

For individuals considering a business relationship and organisations needing local context before committing to an unfamiliar market.

Common questions

What information should I provide?: Describe the counterparty, the proposed relationship, relevant countries and your deadline. We then agree the research questions, available sources and report format.
What are the limits of the research?: Access to records varies by jurisdiction. The report identifies missing information and does not treat an absence of adverse findings as proof that no risk exists.

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Start a conversation

For advisory, due diligence or training enquiries, tell us briefly how we can help and the relevant timeframe. Initial enquiries are answered promptly and in confidence.

37 Lombard Street, 6th Floor
London, EC3V 9BQ

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What to include in your enquiry

— Your timeframe — any deadlines or dates we should know about
— The jurisdiction(s) involved (UK, EU, Canada or elsewhere)
— Whether you have documents or records you can share

Please do not include sensitive personal information, financial records or case files in your initial enquiry.