Cover types · PI & PL

PI insurance vs public liability for UK professional firms — two distinct covers

PI and PL both start with ‘P’ and both cover things going wrong — but they respond to different situations. This page maps what each cover does, when a professional firm needs both, and how the two interact.

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Reviewed by Apex Insurance Brokers · Published 14 July 2026

The two covers in one paragraph each

Professional Indemnity (PI). Covers civil liability arising from the professional's advisory work, advice, deliverables, code, design — the intellectual output of the service.
Public Liability (PL). Covers civil liability for physical injury to third parties and physical damage to third-party property arising from the firm's activities or premises — the physical-world consequences of operations.

When you need PI

Any professional advisory activity where clients rely on your work.
Regulated professional practice (SRA, ARB, ICAEW, RICS, FCA, etc).
Client contracts requiring PI as a condition.
Freelance or contractor work with corporate clients.
Consulting, coaching, training, technical advisory activity.

When you need PL

Clients or visitors physically attending your premises.
On-site work at client premises.
Any activity with plausible third-party injury or damage risk (physical events, physical products, physical delivery).
Contract requirements from client, landlord or event venue.
Public-facing activity (workshops, seminars in person, retail).

Where they overlap

Errors causing physical damage. Where a professional's advice or design directly causes physical harm (structural engineer's design failure causing collapse), both covers may respond — typically PI is primary for advice-related, PL for direct physical.
On-site consultancy. Consultant working at client premises — PI covers advisory work; PL covers slip-and-fall at premises.
Product-adjacent professional services. Engineers, architects, IT consultants delivering both advice and installation may need both.

Combined policies

Most professional-firm insurance packages bundle PI and PL together for administrative simplicity.
Combined limit may be shared or separate depending on wording.
Some sophisticated placements separate the two for optimal pricing.
Freelancer and small-firm packages typically integrate both.

Common firm scenarios

Solicitors' firm with office visitors. PI for legal advice; PL for office visitor injury.
Architectural practice with on-site work. PI for design; PL for building-site presence and physical damage.
Freelance IT contractor at client site. PI for consulting; PL for accidental damage to client equipment.
Executive coach at client offices. PI for coaching content; PL for workshop-related injury.
Family office with client meetings. PI for advice; PL for client premises visits.

Employer's Liability (EL) — the third dimension

EL is mandatory under the Employers' Liability (Compulsory Insurance) Act 1969 for firms with employees.
Minimum £5m per claim.
Covers employee injury or illness arising from employment.
Distinct from both PI and PL.
Sole practitioners without employees don't need EL; firms with any employees do.

Frequently asked

Do I need both PI and public liability as a professional?

Depends on your setup. If clients or visitors attend your premises, or you go on-site, you need PL. If you give professional advice, you need PI. Many small firms need both; some can be selective.

What's the difference between PI and PL in one sentence?

PI covers advice going wrong; PL covers physical things going wrong.

Can PI cover physical damage to a client's property?

Sometimes, where the damage arises from professional advice or design work (structural engineering, architectural design). But typically PL is the primary cover for physical damage; PI responds only to the specific advice-based causation.

What is the minimum PL cover for professional firms?

No statutory minimum. Client contracts often require £1m-£5m. Landlord contracts and public-venue contracts often require £5m-£10m.

Do combined PI/PL policies share a single limit?

Depends on wording. Some combined policies have shared aggregate; others have separate limits for each cover. Read the schedule carefully.

If I work only online, do I still need PL?

Reduced need. Pure online delivery with no client premises visit and no physical delivery typically means PL is optional. But most professionals occasionally have some in-person element.

Does my landlord require me to hold PL?

Commercial lease terms often require PL as a lease condition. Check your lease — typically £5m minimum for professional office space.

What about employer's liability (EL)?

Mandatory under the ELCI Act 1969 for any firm with employees. Minimum £5m per claim. Separate from PI and PL. Sole practitioners with no employees are exempt.

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