What Is Executive Due Diligence? A Board's Guide

Updated 5 October 2026 by Investigation Bureau

Executive due diligence is the documented verification of a senior individual: a prospective CEO, a board appointee, a founder you are about to fund or a partner you are about to trust. It is done before the appointment, not after the problem. It answers the question references never will: is this person's history what they say it is?

The risk is lopsided. A senior appointment that goes wrong costs a multiple of the salary in severance, disruption and reputation. The diligence that would have prevented it costs a few days of an investigator's time. Even so, most organisations still vet a £200,000 appointment with two telephone references and a Google search, and in effect the candidate chose both.

What a proper executive due diligence report covers

Verified career history. Every role, employer and date is tested against the record. The result is the evidenced version, not the CV's version. Gaps in employment and inflated titles show up here.
Qualifications confirmed at source. The university, the institute, the register. Degree fraud persists because almost nobody checks.
Directorships and interests. Every current and former UK directorship and shareholding, with resignations and strike-offs, plus the overseas equivalents. That includes the roles the candidate did not mention, which are often the most informative finding in the report.
Insolvency and disqualification. Personal bankruptcy and IVA history, director disqualifications, and the financial record of the companies they ran.
Litigation history. Civil claims brought and defended, appearances before employment tribunals, and how the person conducted themselves in them.
Adverse media and reputation. Archived and international press, what the trade says, screening against sanctions lists and for politically exposed persons, and lawful open-source research into public conduct.
Undisclosed conflicts. The consultancy that competes with you, the spouse on a supplier's board, the investment that colours their judgement.

What it is not: surveillance of the candidate, access to private accounts, or anything unlawful. Executive due diligence is record-based and discreet. A subject with nothing to find will never notice it.

How it differs from a DBS check or referencing

A DBS check discloses criminal records, within strict eligibility rules. Most executive roles qualify only for a basic check, which shows unspent convictions and nothing more. References are chosen by the candidate. Executive due diligence sits above both. It covers the civil, financial, corporate and reputational record, which is where nearly all senior-level risk lies. The candidate who will cost you is rarely a criminal. More often they are a serial optimist with three quiet insolvencies, a directorship they did not mention and a tribunal history of departures that were never quite their fault.

When boards and investors commission it

Before an appointment. C-suite, board and trustee roles, and senior managers in regulated sectors, where the regulator expects the firm to have satisfied itself.
Before an investment. Funding a founder is an appointment decision with worse exit options. We take investor instructions of this kind as part of our corporate work.
Before a partnership. See our companion guide on due diligence on a business partner.
After a suspicion. When something about a person already in post stops adding up. This is quieter, more delicate work, and it often runs alongside a workplace investigation.

What a defensible report looks like

Two disciplines make an executive due diligence report worth its fee. The first is evidence kept apart from allegation. What the registers prove, what the press claims and what remains unverified are each labelled as such, so the board can give each its proper weight. The second is a documented lawful basis. The work is carried out under UK GDPR on the basis of legitimate interests. It is proportionate to the role, drawn from lawful sources and disclosed only to the people you nominate. We are registered with the ICO as a data controller (ZC259849). We write the report to stand up to scrutiny by your counsel, by your regulator and, if it ever comes to that, by a court.

Frequently asked questions

Is executive due diligence legal without the candidate's consent?

Yes, when it is done proportionately and from lawful sources. UK GDPR does not require consent for processing based on legitimate interests. It requires necessity, proportionality and fairness. Many organisations also tell senior candidates that vetting will take place. That is good practice, and the candidate's reaction is a small test in itself.

Will the candidate know?

Record-based due diligence is invisible to the candidate. If the work would benefit from enquiries that might become known, for example discreet industry references beyond the list the candidate supplied, we agree that with you first.

How long does it take and what does it cost?

A UK-focused report on one individual typically takes a few working days. Histories that cross several jurisdictions take longer, and cross-border work is handled with trusted partners. The fee is a fixed project price, quoted after a free scoping conversation and sized to the exposure the role carries. It is modest against the salary at stake and trivial against the cost of the wrong appointment.

We already use a screening provider. Is this different?

Yes. Automated screening verifies documents and databases at volume, and it is the right tool for regular hiring. Executive due diligence is investigative: an investigator reconciles one person's whole record against the account they give of themselves, and follows up whatever does not fit. The two complement each other. Neither replaces the other.

An appointment or investment you need to be sure about. Put it to an investigator in confidence, free and without obligation, and we will tell you what a proportionate report would cover and cost: send a confidential enquiry.