The definitive guide to executive search — what headhunters do, how they work, and why businesses use them for their most important hires.
Table of Contents
A headhunter is a specialist recruitment professional hired by an organisation to identify, approach, and secure candidates for senior, executive, or hard-to-fill positions. Unlike conventional recruiters who advertise roles and wait for applications, headhunters proactively go into the market to find the right person — typically someone not actively looking for a new role. The term is used interchangeably with "executive search consultant," though some firms distinguish between the two based on seniority thresholds or methodology.
Headhunters operate at the senior end of the hiring spectrum: C-suite appointments, board-level placements, managing director and VP roles, and highly specialist positions where the talent pool is small and the stakes high. The defining characteristic is the proactive, research-led approach to candidate identification — not the advertising and filtering that underpins traditional recruitment.
In the UK, headhunters typically work on a retained basis, meaning the hiring organisation pays a portion of the fee upfront to secure the firm's exclusive commitment to the search. This model distinguishes retained executive search from contingency recruitment, where fees are only paid on successful placement. Most established UK search firms — including those accredited by the Association of Executive Search and Leadership Professionals (AESC) — operate exclusively on a retained basis.
The process begins with a detailed briefing — understanding not just the role requirements, but the organisation's strategy, culture, leadership dynamics, and the specific qualities that will make the difference between a good hire and an exceptional one. This briefing phase often involves multiple conversations with the CEO, Chair, CHRO, or the relevant hiring manager, and results in a comprehensive role specification and candidate profile.
Next comes research and market mapping. The headhunter identifies every potential candidate in the relevant market — current incumbents in comparable roles, recently promoted executives, lateral moves from adjacent sectors, international candidates where the search is global in scope. A thorough search will map 100–300 potential candidates before narrowing to a longlist of 15–25 people genuinely worth approaching.
The approach itself is discreet and personalised. Most people contacted are not actively looking for a new role. The headhunter's job is to make the opportunity compelling enough to create genuine interest — presenting the role, the organisation, and the growth potential in a way that resonates with a specific individual's career ambitions. This requires deep market knowledge and strong interpersonal skills.
Assessment follows: competency-based interviews, psychometric testing in many cases, 360-degree referencing with former colleagues and managers, and detailed written candidate assessments for each shortlisted individual. The client receives a shortlist of typically three to six candidates, each accompanied by a thorough written report covering career history, motivations, competency evidence, and any concerns or risks.
From shortlist presentation, the headhunter manages the interview process, supports offer structuring and negotiation, and in most retained engagements, provides an aftercare period of three to six months post-placement — checking in on the new hire's integration and flagging any issues early.
The case for using a headhunter is strongest when one or more of the following conditions apply. The role is director level or above, and the best candidates are unlikely to be actively job-seeking. Confidentiality is required — for example, when replacing an incumbent who has not yet been told they are leaving, or when a company does not want competitors to know it is building capability in a particular area.
You need access to passive candidates — those who are settled in their current roles and will only move for the right opportunity, actively presented to them. Other channels have failed or are unlikely to work: job boards, LinkedIn advertising, and referral schemes consistently underperform at senior levels because the most sought-after executives are simply not looking.
The cost of getting the appointment wrong is high. Research consistently shows that a failed senior hire costs between three and five times the annual salary when you account for severance, lost momentum, team disruption, and the opportunity cost of re-running the search. When the downside of failure is that significant, the 25–35% search fee represents sound risk management rather than an optional extra.
UK retained executive search fees typically fall in the range of 25%–35% of the first year's total compensation package — base salary, bonus, and in some cases the value of benefits. A fee of 30% of base salary is most commonly quoted, though firms serving the FTSE 100 or highly specialist sectors frequently command 33%–35%.
The fee is usually structured across three equal instalments: the first on engagement (when the search commences), the second on presentation of the shortlist, and the third on acceptance of the offer. This phased structure protects both parties — the search firm is not bearing the entire financial risk, and the client is not paying the full amount before value has been demonstrated.
Most search firms charge expenses on top of the professional fee — typically 10%–15% of the fee itself — covering research, travel, advertising where used, and assessment tools. These should be itemised and agreed in the engagement letter.
Guarantee periods vary by firm but most offer a repeat search at no additional professional fee if the placed candidate leaves voluntarily or is dismissed for performance reasons within six to twelve months. The terms — and any exclusions — should be examined carefully before signing.
The distinction is often misunderstood, and the terms are sometimes used interchangeably — incorrectly. A recruitment agency advertises a role, screens inbound applications, and presents the strongest candidates to the client. This model works well for roles where there is a ready supply of active candidates — management, specialist, and mid-level positions where advertising delivers a workable applicant pool.
A headhunter maps the entire available market and approaches suitable candidates directly — whether or not they are looking. This model is necessary when the best candidates are not applying anywhere because they are not looking, when discretion is required, or when the role is sufficiently senior that advertising it publicly is not appropriate.
Operationally: agencies fill roles from 15%–20% of the talent market (active job seekers). Headhunters access the other 80% — the passive majority. The fee differential (15–25% contingent versus 25–35% retained) reflects not just the method but the risk allocation, the depth of service, and the quality of assessment that a retained engagement delivers.
The practical summary: headhunters find people; agencies wait for people to find them. For senior roles where the best candidates are settled and successful in their current positions, only headhunting reaches them.
How long does an executive search take? A typical search for a director-level role takes 8–14 weeks from briefing to offer acceptance. CEO and board-level searches typically run 16–20 weeks, reflecting the smaller candidate pool, additional assessment requirements, and longer notice periods involved.
Do headhunters offer guarantees? Yes. Most retained search firms provide a guarantee period of 6–12 months. If the placed candidate leaves voluntarily or is dismissed for performance reasons within that period, the firm will conduct a replacement search at no additional professional fee. Exclusions typically include redundancy due to restructuring.
What are off-limits restrictions? Once a headhunter places a candidate in your organisation, that candidate — and often their immediate team — becomes "off-limits" to the firm for a defined period, typically 12–24 months. This means the firm cannot approach your new hire on behalf of another client. It is an important protection for the client organisation and a sign of professional integrity from the search firm.
Do headhunters actively promote diversity? Yes — and proactive search is structurally better for diversity than advertising. Rather than filtering from whoever applies (who tend to be homogeneous in application behaviour), headhunters map the full market and can actively seek out underrepresented candidates. Many firms operate specialist diversity-focused practice areas and have built proprietary databases of senior candidates from underrepresented groups.
Related Reading