Summary

Outsourced HR is when a UK SME contracts an external HR consultancy to handle people-management functions -typically employment contracts, policy work, employee relations, employment law advice, and day-to-day HR queries -on a fixed monthly retainer instead of hiring a full-time HR person internally. For most UK businesses with 20-50 employees, outsourced HR costs between £600 and £1,800 per month, compared to £35,000-£55,000 a year for an in-house HR Manager.

This guide is written for founders, MDs and owners of UK SMEs who are weighing up whether outsourced HR is the right answer for their business. We'll cover what outsourced HR actually includes, when it makes sense (and when it doesn't), how to compare providers, and the questions you should ask before signing anything.

 

Key Takeaways

What outsourced HR actually is
A fixed monthly retainer with an external HR consultancy, covering employment contracts, policies, employee relations, and day-to-day HR queries — as an alternative to hiring an in-house HR Manager.

Why it's become a serious option for SMEs
Three drivers: UK employment law has got significantly more complex (and expensive to get wrong); in-house HR Managers now cost £55k–£70k fully loaded; and the quality of outsourced providers has improved markedly.

What you typically get
Day-to-day advice, casework support (grievances, disciplinaries, exits), bespoke contracts and documentation, an employee handbook, and strategic/project support. Recruitment, training programmes, and tribunal representation usually sit outside the retainer.

Who it suits
The sweet spot is 15–60 employees with no in-house HR specialist. Under 15, a lightweight subscription may do; over 75, an in-house hire often starts to make more economic sense.

How to choose a provider
The key differentiator is the named consultant model vs. pool model — named is better for continuity and sensitive matters. Also check: response SLAs, CIPD qualifications, professional indemnity insurance, sector experience, and exactly what's in (and out of) scope.

What it costs
£600–£1,800/month for a quality retained service for a 20–50 person business, versus £2,900–£4,600/month equivalent for an in-house HR Manager. Sub-£600 options exist but typically cap usage and only provide a helpline and templates.

Practical next steps suggested
Audit your current HR time spend, quantify the hidden cost, identify your top three concerns, shortlist 2–3 providers, and take a free HR health check before committing.

 

Why UK SMEs are turning to outsourced HR:

Three things have changed in the last five years that have made outsourced HR a serious option for SMEs, not just a fallback.

First, UK employment law has become significantly more complex. Day-one unfair dismissal rights, expanded flexible working rules, statutory holiday calculations for variable-hours workers, the right to disconnect, and the cascade of consultations following the Employment Rights Bill have created compliance complexity that's hard for a non-specialist to track. The cost of getting it wrong has risen too -tribunal awards now regularly exceed £20,000 even for relatively straightforward cases.

Second, the economics of hiring an in-house HR Manager have shifted. A competent HR Manager in the UK now commands £40,000-£55,000 plus on-costs (NI, pension, benefits) totaling around £55,000-£70,000 fully loaded. For a 30-person business with one HR Manager, that's £1,800-£2,300 per employee per year on people-management overhead -and most of the work is reactive admin rather than strategic value.

Third, the quality of available outsourced HR services has improved dramatically. Ten years ago, outsourced HR mostly meant a templated handbook and a helpline. Today, the better providers offer named consultants, faster SLAs than most in-house teams, sector specialism, and integrated services from employment law to recruitment and training.

 

What's actually included in outsourced HR for SMEs?

There's no industry-standard definition of 'outsourced HR,' which is part of why comparing providers is harder than it should be. But for a typical UK retained HR service aimed at 20-50 employee businesses, you should expect the following to be included as standard:

Day-to-day advice and casework

• Unlimited phone and email support for HR queries -covering things like managing absence, performance issues, contractual changes, parental leave, and disciplinary matters
• Active casework support for grievances, disciplinaries and performance management, including drafting investigation outcome letters
• Settlement agreement support and negotiation help for senior exits or contentious departures
• Employment tribunal threat management - advice and drafting if a former employee challenges a dismissal

Contracts and documentation

• Bespoke employment contracts for all role types (permanent, fixed-term, zero-hours, apprentice)
• An employee handbook tailored to your business and updated when the law changes
• Job descriptions, offer letters, probation letters, induction documentation
• Policies on flexible working, family leave, disciplinary, grievance, equal opportunities, data protection, sickness, IT use, and a handful of others required for compliance

Strategic and project support

• Annual policy review and refresh as legislation changes
• Salary benchmarking against your market
• Restructure or redundancy support if you need to make changes to your team
• Pre-acquisition or pre-investment HR due diligence

 

What you typically pay extra for

Most retainers or subscriptions cover the above. The following usually sit outside the core service and are priced separately:

• Recruitment and headhunting (handled by a recruitment partner - or in our case, our sister business The HR Recruiters)
• Management training programmes
• Major employment tribunal representation
• On-site HR Business Partner days
• Engagement surveys, culture work, or large restructure projects

A KEY DISTINCTION A retainer or subscription pays for access and ongoing advice. It does not buy unlimited project work. Some providers package things differently - beware retainers that exclude casework, or include 'up to 10 hours per month' caps that you'll exceed on your first grievance. Always ask: what specifically would I pay extra for, and at what rate?

 

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Outsourced HR vs in-house HR: which is right for your SME?

The honest answer is that it depends on three things: the size of your business, the complexity of your people-management needs, and the cost-benefit at your stage.

Here's a rough framework for the kinds of UK SMEs we work with:

 

Business size	Typical right answer	Why
Under 15 employees	Outsourced HR subscription (lower tier)	Volume doesn't justify in-house. Costs scale with use.
15-50 employees	Outsourced HR subscription (standard tier)	Sweet spot for outsourcing - too small for FTE, too big for ad-hoc.
50-75 employees	Outsourced HR + part-time HR coordinator	Need someone in-house for admin; outsource for expertise.
75+ employees	Consider in-house HR Manager + outsourced specialist support	Volume of internal queries justifies a full role.

 

Those are starting points, not rules. A 25-person business with high turnover, complex shift patterns, or a tribunal claim hanging over it might genuinely need an in-house HR Manager. A 60-person professional services firm with stable, salaried staff and low complexity might run perfectly well on outsourced HR alone.

 

When does outsourced HR make sense for your SME?

Strong fit signals

• You have 15-60 employees and no in-house HR specialist
• You're handling people issues yourself (or via your office manager / FD) and it's eating into your time
• You've had a near-miss - a grievance, a contract dispute, or a difficult exit -and want to put proper structure in place before the next one
• You're growing fast and hiring frequently, but each new hire raises questions about contracts, probation, or employee benefits
• You're aware your handbook and contracts haven't been reviewed in years
• Your managers are uncomfortable having difficult conversations with their teams and you suspect performance issues are being avoided

Weaker fit signals

• Your business is heavily unionised, or you're in active collective bargaining
• You're going through a major transformation (large redundancy programme, M&A, TUPE)
• You need someone physically on-site every day - outsourced providers can be on-site, but if you need daily presence, hiring in-house is often more cost-effective
• You're under 10 employees and have no growth plans - at this size you may be able to get by with templated contracts and occasional ad-hoc advice

How to choose an outsourced HR provider - what to look for

The UK outsourced HR market has expanded rapidly and quality varies. Some providers are excellent. Some are call-centre operations that will route you through different consultants every time you call. Here's how to tell the difference before you sign.

 

Named consultant model vs. pool model

Better providers assign you a named consultant who knows your business. Lower-cost providers operate a 'pool' model -you call a central number and get whoever's available. The pool model is cheaper but you end up explaining your situation from scratch every time, and the advice can be inconsistent.

If you're paying for advice on something sensitive -a senior exit, a difficult performance issue, a grievance involving multiple parties -you want continuity. Ask explicitly: will I have a named consultant, or am I in a pool?

Response time SLAs

Find out, in writing, what their service level agreement is for response times. The benchmark for a decent provider:

• Phone calls answered same business day
• Email responses within 4 working hours
• Active casework: returned with a draft within 24 hours

If a provider can't tell you their SLA, that itself tells you something.

Insurance and qualifications

• Are their consultants CIPD-qualified? At what level (Associate, Member, Chartered)?
• Do they carry professional indemnity insurance? At what value?
• Are they accredited, or members of any professional bodies?

Sector experience

HR work can be sector-agnostic, however industries with more ‘blue collar’ workers are likely to experience different issues to those in professional services. Ask for references from businesses similar to yours - not just in size, but in sector and stage.

What's actually included - in detail

Get the scope of services in writing, with examples. The headline 'unlimited advice' often comes with caveats. Specific things to ask about:

• Is casework limited (e.g., 'up to 2 active matters at a time')?
• Are contract drafts and updates included, or charged per document?
• Is policy review included annually, or extra?
• What happens if you have a tribunal threat - included or extra?

How much does outsourced HR cost in the UK?

We've written a detailed pricing guide separately - but the short version: for a 20-50 employee UK SME, expect to pay £600 to £1,800 per month for a quality retained service, depending on your specific headcount.

Some context on what that buys you, compared to alternatives:

• £250 - £600/month (dependent on headcount): Standard retainer – Unlimited HR advice, people software, key HR document review
• £600 - £1,200/month: Enhanced tier – Unlimited case management, unlimited people administration for starters and leavers, Health & safety compliance, people software
• £1,700 - £3,860/month: Premium tier - strategic partner, staff surveys, recruitment support, bespoke handbook, policies and contracts, unlimited casework, people software, unlimited HR admin, manager training
• £35,000-55,000/year (£2,900-4,600/month): in-house HR Manager equivalent

Cheaper options exist - there are providers offering 'HR support' for £99-£250/month. At those prices you're getting a helpline and templates, not advice. You’ll also usually find that usage is capped at 30 or 60 minutes per month. For an SME that values its time and wants to avoid expensive mistakes, the £600+ tier is the realistic start point.

Practical first steps if you're considering outsourced HR

If you've read this far, you're probably weighing up whether to make a change. Here's a sensible sequence:

1. Audit where you are now. What HR tasks are eating into your week? How many people-issues have you handled in the last 90 days? What's your current method (templated handbook from 2019? Solicitor on retainer? Office manager doing it all?)
2. Quantify the cost. Add up the hours you, your FD, or your office manager are spending on HR tasks. Multiply by their hourly cost. This is what you're already paying for unstructured HR - usually a surprise.
3. Set out your three biggest concerns. Is it compliance? Difficult people issues? Hiring growth? The provider you pick should be strong in your specific areas.
4. Shortlist 2-3 providers and have introductory calls. Ask the questions in the section above. Be wary of anyone whose first pitch is the price rather than understanding your business.
5. Take an HR Health Check or audit before committing. A good provider will offer this free - it gives you a baseline and you'll see how they work before signing.

Frequently Asked Questions

Is outsourced HR worth it for a small business?

For most UK SMEs with 15+ employees, outsourced HR provides better value than handling people-management ad-hoc, and significantly better value than hiring an in-house HR Manager. The break-even is typically around 10-15 hours per month of HR-related work - if you're spending more than that as a founder or FD, outsourcing usually pays for itself in time recovered alone.

How is outsourced HR different from using an employment solicitor?

Employment solicitors handle legal disputes, employment tribunals, and complex contracts on an hourly basis (£250-500/hour typically). Outsourced HR providers handle day-to-day people management, contracts, policies, casework, and proactive advice on a fixed monthly fee. Most SMEs benefit from outsourced HR as the day-to-day function, with a solicitor on standby for tribunal-level escalation.

What happens if I outsource HR and then hire an in-house person later?

This is a common path. Many SMEs use outsourced HR until they hit 60-80 employees, then bring HR in-house - sometimes keeping the outsourced provider for specialist work (employment law advice, restructures, tribunal support). Most reputable providers will help you transition smoothly, including partnering with you to recruit your in-house HR specialist, handing over documentation and supporting your new hire.

Will outsourced HR understand my business and culture?

A good provider will. The named-consultant model means the same person works with you over time and builds genuine understanding of your business, team, and culture. Pool-based providers struggle more with this - which is why the named consultant question is one of the most important when choosing a provider.

How long are typical outsourced HR contracts?

12-month contracts are standard, often with a 60-90 day notice period. Beware the big call-centre providers who often lock customers into 5 or 10 year contracts with sketchy auto-renews. Some providers offer rolling monthly arrangements at a premium. Beware contracts with auto-renew clauses and long notice periods - you should be free to leave if the service isn't working.

Where do you stand right now?

Where do you stand right now? Take our free HR Health Check - 12 questions, 5 minutes. You'll get a personalised risk score and a PDF report on where your business is exposed. → Take the Free HR Health Check

If you've been doing HR yourself or pushing it onto your office manager, you're paying for it one way or another - in time, in risk, or in missed opportunity. The HR Health Check takes 5 minutes and tells you exactly where your business is exposed. Whether you outsource HR or not, it's worth knowing.