PA Recruitment in London: Why Generalist Agencies Cost You Twice

Generalist agencies fill PA roles from the same candidate pools they use for warehouse operatives and data entry clerks. That mismatch is the problem. London businesses hiring through non-specialist agencies routinely pay a placement fee, then pay again six months later when the hire fails. Specialist PA recruitment eliminates that double cost.

Key Takeaways

• Generalist agencies carry no genuine PA-specific candidate depth, so London employers receive CVs screened on keywords, not professional judgement.
• Failed PA hires cost London employers an average of 30% of annual salary in rehiring costs, lost productivity, and executive downtime.
• PA roles at FTSE 250 level require sector-specific screening that generalist recruiters are not structured to deliver.
• Briefing quality determines shortlist quality: specialist consultants challenge and refine briefs rather than accepting them at face value.
• The most experienced London PAs are not actively job-seeking - they are placed through consultant relationships, not job boards.

Why Generalist Agencies Fail PA Briefs

London's PA market is a specialist discipline. The role demands executive-level communication skills, discretion under pressure, complex diary management, and often sector fluency - whether that's financial services, legal, or FMCG. A generalist recruiter managing fifteen different role types across three sectors has no structural reason to develop that depth.

The failure rate tells the story. Across London's office support market, estimates from HR sector bodies put first-year attrition for PA hires placed by generalist agencies at 35-45%, compared to under 20% for specialist-placed candidates. That gap exists because specialism creates screening accuracy. Generalist consultants screen on CV keywords. Specialist consultants screen on behavioural fit, working-style alignment, and executive temperament - the variables that actually predict longevity in a PA role.

Why do generalist PA recruitment shortlists underperform?

Generalist shortlists for PA roles underperform because the consultant has no established relationship with the candidate pool. They search job boards and databases for keyword matches rather than drawing from active networks of known professionals. The result is a shortlist that looks adequate on paper but lacks the professional depth a high-performing executive PA role demands.

The True Cost of a Failed PA Placement

The fee on a failed PA placement is rarely the largest cost. Recalculate the total: the original placement fee (typically 12-18% of salary), rehiring costs, agency fee for replacement, and executive productivity loss during the gap. For a London PA on a £40,000 salary, a failed placement can represent total cost exposure of £15,000 to £22,000 before you factor in the disruption to the executive's output.

The Recruitment and Employment Confederation estimates the cost of a bad hire across UK professional roles at an average of £30,000, with senior support positions at the higher end of that range. Those figures assume a single failure. Businesses that repeatedly use generalist agencies for PA recruitment compound that cost with every hire cycle.

[Visual: Side-by-side cost comparison table - generalist agency route vs specialist agency route, showing placement fee, time-to-fill, 12-month attrition rate, and total cost exposure]

What does a failed PA hire actually cost a London business?

The total cost of a failed PA hire in London typically sits between £12,000 and £25,000 when you account for the placement fee, replacement search costs, lost executive time, and onboarding duplication. Senior PA roles at FTSE 250 organisations carry higher exposure due to longer notice periods, more complex handover requirements, and the executive productivity impact during the vacancy period.

The Specialist Advantage: What Generalists Cannot Provide

Specialist PA recruitment delivers two things a generalist agency structurally cannot: relationship-managed candidates and informed brief challenges. Morgan Spencer consultants maintain active relationships with PA and EA professionals across London. When a brief arrives, they select from known individuals - people they have placed before, met multiple times, and whose working style they can speak to directly.

The second advantage is brief challenge. When a brief is unrealistic in salary, expectations, or role scope, a specialist consultant says so. That challenge protects the client. A generalist consultant, working at volume across multiple disciplines, has neither the market knowledge nor the commercial incentive to push back. The strategies that build resilient admin teams start with the quality of the hiring conversation, not the shortlist.

What makes a specialist PA recruitment agency different from a generalist?

A specialist PA recruitment agency differs through candidate depth, consultant expertise, and brief accuracy. Specialist consultants recruit exclusively within defined disciplines, giving them market intelligence on salary benchmarks, candidate motivations, and role expectations that generalist recruiters cannot develop across wide sector remits. That intelligence produces shortlists worth interviewing, not shortlists worth padding.

How to Brief a Specialist PA Recruitment Agency

A clear brief separates a good hire from an expensive mistake. Generalist agencies accept vague briefs because their process is volume-driven. Specialist agencies challenge briefs because their reputation depends on placement quality.

How to Brief for PA Recruitment in London

Step 1: Define the executive's working style, not just their schedule. List whether the executive is reactive or structured, their communication preference, and the complexity of diary management required. This information determines temperament fit, which a job description cannot capture.

Step 2: Specify the sector context. Financial services, legal, and professional services PA roles each carry distinct discretion and compliance expectations. Name the sector and the client-facing nature of the role so the consultant filters for relevant experience.

Step 3: Confirm the PA-to-executive ratio. A one-to-one PA role requires different screening than a PA supporting a board team. The ratio affects workload structure, prioritisation skills, and the candidate profile that will succeed.

Step 4: Set realistic salary parameters. London PA salaries for experienced candidates with FTSE 250 exposure range from £38,000 to £58,000 in 2026. Briefs set below market attract candidates who will leave within 12 months for better-aligned roles.

Step 5: Agree the process timeline upfront. A specialist agency should present a first shortlist within five working days. Longer than that signals inadequate candidate depth or poor brief alignment.

What the London PA Market Looks Like in 2026

London's PA talent pool at senior level is candidate-short. The most experienced professionals - those with five or more years of FTSE 250 or professional services PA experience - are rarely actively job-seeking. They move when a trusted consultant approaches them with a role that fits. That sourcing dynamic is invisible to generalist agencies working from job board responses.

Morgan Spencer has operated as a dedicated recruiter for executive assistants and personal assistants across London's corporate market for over 21 years. The candidate relationships that produce accurate shortlists are built over years of consistent engagement, not assembled from a database search when a brief arrives.

Understanding whether you need a Chief of Staff, an EA, or a PA before you brief is the starting point for getting the hire right first time.

Why are the best London PAs rarely found on job boards?

The best London PAs at senior level are not actively applying to advertised roles. They are approached directly by consultants who know their working style, career motivations, and the type of executive they perform best alongside. Job board sourcing produces available candidates. Relationship-managed sourcing produces appropriate candidates. For PA roles at executive level, that distinction determines whether the placement lasts.

FAQ

What should I expect to pay for a specialist PA recruitment agency in London?

Specialist PA recruitment fees in London typically sit at 18-25% of the placed candidate's annual salary. For a PA on £45,000, expect a fee of £8,100 to £11,250. Some agencies offer retained search for senior PA roles at fixed-fee structures. The fee differential over a generalist agency is consistently recovered through lower attrition and faster time-to-productivity in the first 12 months.

How long does PA recruitment take with a specialist agency in London?

A specialist agency with active candidate networks should present a qualified shortlist within five to seven working days of receiving a finalised brief. Total time-to-offer for London PA roles averages three to four weeks from brief to acceptance. Extended timelines usually signal a below-market salary band or a brief that was not finalised before agency release.

What experience level should I ask for when hiring a PA in London?

Match the experience requirement to the executive's seniority and workload. A board-level PA role warrants a candidate with at least five years of PA experience, ideally with exposure to FTSE 250 or comparable environments. For mid-management support, three years of London office experience with strong diary and communication skills is a realistic baseline.

Can a generalist agency find a good PA for my London business?

A generalist agency can fill a PA vacancy. The issue is consistency and fit accuracy. Without specialist market knowledge, generalist recruiters screen on CV surface signals rather than professional judgement. This produces wider variance in shortlist quality and a measurably higher first-year attrition rate compared to specialist-placed candidates.

What is the difference between a PA and an EA in London recruitment terms?

A PA typically supports one senior individual with diary, travel, correspondence, and administrative tasks. An EA operates at a higher strategic level, often liaising directly with board members, managing projects, and acting as a decision-making proxy. Morgan Spencer recruits across both levels through our dedicated PA and EA professionals across London practice, with distinct candidate pools and screening criteria for each.

About the Author

Margaret George | Managing Director, Morgan Spencer

Margaret George is the Managing Director of Morgan Spencer and a specialist recruiter with 21 years of experience working predominantly with a FTSE 250 client base across the London market. Her career spans multiple national branch network responsibilities, on-site recruitment solutions, and both interim and permanent resourcing. Margaret's view is clear: building a successful business is only possible through developing dedicated, committed teams.

Contact: 020 7680 7001 | mg@morganspencer.co.uk

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