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.

The two covers in one paragraph each

1. Professional Indemnity (PI). Covers civil liability arising from the professional's advisory work, advice, deliverables, code, design — the intellectual output of the service.
2. 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

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

When you need PL

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

Where they overlap

1. 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.
2. On-site consultancy. Consultant working at client premises — PI covers advisory work; PL covers slip-and-fall at premises.
3. Product-adjacent professional services. Engineers, architects, IT consultants delivering both advice and installation may need both.

Combined policies

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

Common firm scenarios

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

Employer's Liability (EL) — the third dimension

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

Frequently asked

Related reading

• Employers liability for professional firms — ELCIA 1969
• Public liability for professional firms
• PI insurance for freelancers and contractors
• PI cover limit adequacy check