Sia Partners vs PA Consulting: full comparison for 2026
Quick verdict
Sia Partners (4.1/5) edges ahead of PA Consulting (4.0/5) overall. Sia Partners is the better choice for utilities and insurers wanting regulatory-minded advice. PA Consulting is the stronger option for UK public bodies wanting advice plus delivery. The right choice depends on how independent you need the advice to be, your regulatory exposure, and your budget.
Sia Partners vs PA Consulting: head-to-head summary
| Criterion | Sia Partners | PA Consulting |
|---|---|---|
| Founded | 1999 | 1943 |
| HQ | Paris, France | London, UK |
| Team size | ~3,500 | ~3,900 |
| Rating | 4.1 / 5 | 4.0 / 5 |
| Primary differentiator | Sector regulatory practices applied to AI governance, plus its own Heka.ai tools | Advice from teams that also design and build, strong in UK government |
| Pricing model | Consulting fees; rates not published | Consulting fees; rates not published |
| Min. engagement | Not disclosed | Not disclosed |
| Primary tech stack | EU AI Act, GDPR, DORA | Azure, AWS, GDPR |
| Industries served | Energy & utilities, Banking, Insurance, Public sector, Telecom | Public sector, Defense, Healthcare, Energy & utilities, Consumer |
Sia Partners vs PA Consulting: overview
Sia Partners
Founded in Paris in 1999, Sia Partners now has roughly 3,500 consultants in about 20 countries. Its regulatory practices in energy, utilities, banking, and insurance carry over naturally to AI governance. The firm also sells Heka.ai, a catalog of AI software products, which can speed early results but makes its tool advice less neutral. It suits companies that want management consultants first and technologists second.
PA Consulting
PA Consulting started in 1943 as Personnel Administration and is now a London-based firm with about 3,900 employees and £753 million in 2024 revenue. Jacobs has owned 65% since 2021, with staff holding the rest. Its AI advice tends to come from teams that also design and build products, especially for government, defense, and health clients in the UK and Nordics. That makes the advice practical, though rarely independent of a build.
Services and capabilities: Sia Partners vs PA Consulting
| Capability | Sia Partners | PA Consulting |
|---|---|---|
| Readiness assessment | ✗ | ✗ |
| Use-case prioritization | ✓ | ✓ |
| TCO / ROI modeling | ✗ | ✗ |
| AI governance & EU AI Act | ✓ | ✗ |
| Build vs. buy advice | ✗ | ✗ |
| Independent audit or assurance | ✗ | ✗ |
| Roadmap any vendor can implement | ✗ | ✗ |
| Delivery capability after advice | ✗ | ✓ |
Frameworks and platforms: Sia Partners vs PA Consulting
| Framework / platform | Sia Partners | PA Consulting |
|---|---|---|
| EU AI Act | ✓ | ✓ |
| GDPR | ✓ | ✓ |
| DORA | ✓ | N/A |
| NIST AI RMF | N/A | N/A |
| ISO/IEC 42001 | N/A | N/A |
| Azure | N/A | ✓ |
| AWS | N/A | ✓ |
| Google Cloud | N/A | N/A |
Pricing comparison: Sia Partners vs PA Consulting
| Criterion | Sia Partners | PA Consulting |
|---|---|---|
| Minimum engagement | Not disclosed | Not disclosed |
| Engagement models | Fixed-scope assessment, Multi-use-case advisory, Ongoing advisory | Multi-use-case advisory, Delivery team |
| Rate transparency | Not public | Not public |
| Price tier | Mid-market | Mid-market |
Target audience comparison: Sia Partners vs PA Consulting
| Dimension | Sia Partners | PA Consulting |
|---|---|---|
| Best company size | Mid-market to enterprise | Mid-market to enterprise |
| Best industries | Energy & utilities, Banking, Insurance | Public sector, Defense, Healthcare |
| Best use cases | AI governance for a regulated utility., DORA and AI Act planning at an insurer. | AI planning for UK government departments., Health service AI adoption. |
| Typical project type | Fixed-scope assessment | Multi-use-case advisory |
Sia Partners vs PA Consulting: pros and cons
| Sia Partners | |
|---|---|
| + | Long regulatory experience in energy and finance |
| + | Change management is part of the offer |
| + | Ready-made tools for early wins |
| - | May favor its own Heka.ai products |
| - | Limited engineering depth for custom work |
| - | Smaller US presence |
| PA Consulting | |
|---|---|
| + | Long record with UK government and health clients |
| + | Design and engineering behind the advice |
| + | Partly owned by staff |
| - | Jacobs holds 65%, and one database reports a full acquisition in 2026 that we couldn't confirm |
| - | Advice usually comes packaged with delivery |
| - | Rates not published |
Who should choose Sia Partners?
A typical fit: AI governance for a regulated utility.
Sector regulatory practices applied to AI governance, plus its own Heka.ai tools. Minimum engagement is not publicly disclosed. Works best with clients in Energy & utilities, Banking, Insurance, Public sector, Telecom.
Who should choose PA Consulting?
A typical fit: AI planning for UK government departments.
Advice from teams that also design and build, strong in UK government. Minimum engagement is not publicly disclosed. Works best with clients in Public sector, Defense, Healthcare, Energy & utilities, Consumer.
Decision matrix: Sia Partners vs PA Consulting
| Your situation | Recommended choice |
|---|---|
| You want advice with no build contract attached | Sia Partners |
| Finance needs run costs before approving anything | Neither lists cost modeling; ask for a sample |
| Some of your use cases may be high-risk under the EU AI Act | Sia Partners |
| You need an outside check on a system already built | Neither; use a dedicated auditor |
| You want the same firm to build what it recommends | PA Consulting |
| Your budget is at the lower end | Compare: Sia Partners (Not disclosed) vs PA Consulting (Not disclosed) |
| You need advisers in many countries at once | PA Consulting |
Use case fit: Sia Partners vs PA Consulting
| Use case | Sia Partners fit | PA Consulting fit | Winner |
|---|---|---|---|
| AI governance for a regulated utility. | Strong | Limited | Sia Partners |
| DORA and AI Act planning at an insurer. | Strong | Limited | Sia Partners |
| AI planning for UK government departments. | Limited | Strong | PA Consulting |
| Health service AI adoption. | Limited | Strong | PA Consulting |
Verdict: Sia Partners vs PA Consulting
Sia Partners (4.1/5) is the stronger overall choice for most AI Advisory projects. Sector regulatory practices applied to AI governance, plus its own Heka.ai tools.
PA Consulting (4.0/5) is worth a look if you need health service AI adoption. If your situation matches that, PA Consulting is a competitive option.
Related comparisons
Sia Partners vs PA Consulting FAQ
Is Sia Partners better than PA Consulting?
Sia Partners (4.1/5) scores higher overall, but "better" depends on your use case. Sia Partners's strongest advantage: long regulatory experience in energy and finance. PA Consulting's strongest advantage: long record with UK government and health clients.
How do Sia Partners and PA Consulting differ in pricing?
Sia Partners's pricing: consulting fees; rates not published. PA Consulting's pricing: consulting fees; rates not published. Any hourly bands shown come from Clutch, not a published rate card, so a scoping call is still needed for a project quote.
Which is better for enterprise: Sia Partners or PA Consulting?
PA Consulting is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each firm before shortlisting.
What are the main differences between Sia Partners and PA Consulting?
Sia Partners's primary differentiator is: sector regulatory practices applied to AI governance, plus its own Heka.ai tools. PA Consulting's primary differentiator is: advice from teams that also design and build, strong in UK government. They also differ in team size (~3,500 vs ~3,900), minimum engagement (Not disclosed vs Not disclosed), and primary industries served (Energy & utilities, Banking vs Public sector, Defense).
Verify all details directly with each firm before making a decision.