---
title: "Aon vs Markel Insurance: General Liability Insurance"
description: "Aon’s construction practice reaches contractors, owners, engineers, architects, and developers, while Markel’s GL overview identifies its own eligible businesses, so a project-based buyer should verify class fit rather than infer it from a broad liability label."
canonical: "https://spot.insure/compare/aon-vs-markel/general-liability"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-markel"
provider-a: "aon"
provider-b: "markel"
coverage-line: "general-liability"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/aon-vs-markel/general-liability)

## Agent Guide

**What this page is:** Focused comparison of Aon and Markel Insurance for General Liability Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for General Liability Insurance questions about Aon versus Markel Insurance. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Markel Insurance for General Liability Insurance: how do they differ?
- Which is better for General Liability Insurance, Aon or Markel Insurance?
- What does Aon or Markel Insurance publish about General Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for General Liability Insurance from Aon or Markel Insurance?

**Key facts:**
- Line: General Liability Insurance. Providers: Aon and Markel Insurance.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs Markel Insurance](https://spot.insure/compare/aon-vs-markel) — parent: all coverage lines for this pair
- [General Liability Insurance guide](https://spot.insure/coverage/general-liability) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Markel Insurance profile](https://spot.insure/insurance-providers/markel) — provider profile (evidence)
- [Aon vs Markel Insurance Commercial Property Insurance](https://spot.insure/compare/aon-vs-markel/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Crime Insurance](https://spot.insure/compare/aon-vs-markel/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Cyber Insurance](https://spot.insure/compare/aon-vs-markel/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance D&O Insurance](https://spot.insure/compare/aon-vs-markel/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-markel/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-markel/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Management Liability Insurance](https://spot.insure/compare/aon-vs-markel/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-markel/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-markel/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Aon vs Markel Insurance Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-markel/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon General Liability Insurance](https://spot.insure/compare/aig-vs-aon/general-liability) — sibling comparison (other line, or other pair for this line)
- [AIG vs Markel Insurance General Liability Insurance](https://spot.insure/compare/aig-vs-markel/general-liability) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/general-liability) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Markel Insurance General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-markel/general-liability) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Aon General Liability Insurance](https://spot.insure/compare/amelia-risk-vs-aon/general-liability) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Markel Insurance General Liability Insurance](https://spot.insure/compare/amelia-risk-vs-markel/general-liability) — sibling comparison (other line, or other pair for this line)

# Aon vs Markel Insurance: How Do They Compare for General Liability Insurance?

Aon’s construction practice reaches contractors, owners, engineers, architects, and developers, while Markel’s GL overview identifies its own eligible businesses, so a project-based buyer should verify class fit rather than infer it from a broad liability label.

## Research Scope and Use

Use this comparison to evaluate Aon and Markel Insurance for General Liability Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

Aon’s construction practice reaches contractors, owners, engineers, architects, and developers, while Markel’s GL overview identifies its own eligible businesses, so a project-based buyer should verify class fit rather than infer it from a broad liability label. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance")

## What Is Aon?

Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## Markel Insurance: Specialty Business and Products

Markel Insurance is Markel Group's specialty and small-business insurance business, with offerings across packages, workers' compensation, cyber, professional and management liability, property, marine, and surety. Products use different insurers and distribution routes, so compare the issuer and terms shown on the specific quote. [4](https://www.markel.com/about-us "About us") [5](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K")

[Markel Insurance profile](https://spot.insure/insurance-providers/markel)

## What Is General Liability Insurance?

General liability can protect your business when a customer or visitor claims you caused injury or damaged their property. It suits businesses serving customers or working on their premises; your own building, tools and stock need property coverage. [7](https://www.iii.org/article/commercial-general-liability-insurance "Commercial general liability insurance") [8](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [9](https://www.hiscox.com/documents/partner-agent/specimen_forms/GL_Form.pdf "Commercial General Liability Coverage Form")

## Key Differences in General Liability Insurance

### A construction brokerage and Markel’s business classes

Aon’s construction practice reaches contractors, owners, engineers, architects, and developers. Markel’s GL overview identifies its own eligible businesses, so a project-based buyer should verify class fit rather than infer it from a broad liability label. Aon’s practice speaks directly to construction placement, while Markel’s published appetite and application route are the starting points for its quote. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance")

### Coverage and application route

Aon describes third-party casualty protection associated with negligent construction or operations but does not provide policy terms. Markel’s GL overview explains its coverage and how buyers apply. Compare the actual forms and limits for completed operations, contractual liability, and additional insured requirements; the two high-level descriptions do not establish matching triggers or exclusions. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance")

## What to Confirm in General Liability Insurance Quotes

- Ask Aon which construction market and form will insure your project and completed operations. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance")
- Ask Markel to confirm your class, quote route, and occurrence and aggregate limits. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance")

## Offering Details

| Criteria | Aon General Liability brokerage and risk-advisory offering | Markel general liability (official overview) |
| --- | --- | --- |
| Role in This Line | Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For general liability, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | Markel describes offering general liability for the audience stated on the cited product page. [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance") (Evidence: Company-reported; scope: general liability marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Issuing Insurer | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Not found in reviewed sources; scope: Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement..) | Confirm in your quote. |
| Who It’s For | Aon describes its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | IT and technology service businesses, including software/SaaS, hardware businesses, and consultants listed by Markel. [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance") (Evidence: Company-reported; scope: general liability marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Coverage Features | Aon lists General Liability within construction liability and describes casualty protection for third-party bodily injury or property damage associated with negligent acts during construction or operations. A policy’s actual insureds, triggers, exclusions and conditions are not stated on this practice page. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage..) | The cited product page describes general liability with advertising and personal injury coverage available on an occurrence or claims-made basis for the IT-professional classes on this page. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance") (Evidence: Company-reported; scope: general liability marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| Limits and Retentions | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) |
| Risk Services | Aon describes project risk-advisory services to understand project-specific risks and develop risk-transfer, management or mitigation strategies. It also describes a global construction team and market access. These are company-reported brokerage and advisory services, not coverage benefits. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | Confirm in your quote. |
| How to Apply | Confirm in your quote. | The page invites prospective customers or brokers to contact Markel or the named underwriting team. The page does not establish a quote, bind, or coverage-effective timeline. [6](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals "IT Professionals E&O Insurance") (Evidence: Company-reported; scope: general liability marketed by markel; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |

## Full Comparison

- [Aon vs Markel Insurance](https://spot.insure/compare/aon-vs-markel): all coverage lines, business roles, service and claims.
- [What Is General Liability Insurance?](https://spot.insure/coverage/general-liability): General liability can protect your business from covered injury and property-damage claims; your building, tools and stock need separate property coverage.
- [Aon vs Markel Insurance Commercial Property Insurance](https://spot.insure/compare/aon-vs-markel/commercial-property)
- [Aon vs Markel Insurance Crime Insurance](https://spot.insure/compare/aon-vs-markel/crime)
- [Aon vs Markel Insurance Cyber Insurance](https://spot.insure/compare/aon-vs-markel/cyber)
- [Aon vs Markel Insurance D&O Insurance](https://spot.insure/compare/aon-vs-markel/directors-officers)
- [Aon vs Markel Insurance Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-markel/employment-practices)
- [Aon vs Markel Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-markel/fiduciary)
- [Aon vs Markel Insurance Management Liability Insurance](https://spot.insure/compare/aon-vs-markel/management-liability)
- [Aon vs Markel Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-markel/professional-errors-omissions)
- [Aon vs Markel Insurance Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-markel/umbrella-excess)
- [Aon vs Markel Insurance Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-markel/workers-compensation)
- [AIG vs Aon General Liability Insurance](https://spot.insure/compare/aig-vs-aon/general-liability)
- [AIG vs Markel Insurance General Liability Insurance](https://spot.insure/compare/aig-vs-markel/general-liability)
- [Alliance Risk vs Aon General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/general-liability)
- [Alliance Risk vs Markel Insurance General Liability Insurance](https://spot.insure/compare/alliance-risk-vs-markel/general-liability)
- [Amelia Risk vs Aon General Liability Insurance](https://spot.insure/compare/amelia-risk-vs-aon/general-liability)
- [Amelia Risk vs Markel Insurance General Liability Insurance](https://spot.insure/compare/amelia-risk-vs-markel/general-liability)

## Sources

### Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed.. Accessed 2026-09-29.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page.. Accessed 2026-09-29.
3. [Construction and Infrastructure Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management). Aon; Construction client audience and global placement role, lines 123–126; offering descriptions lines 135–156; coverage-area taxonomy lines 167–195; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule.. Accessed 2026-09-30.

### Markel Insurance

4. [About us](https://www.markel.com/about-us). Markel; Markel at a glance; description of Markel Insurance within Markel Group Inc.. Accessed 2026-09-28.
5. [Markel Group Inc. 2025 Form 10-K](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm). U.S. Securities and Exchange Commission; filed by Markel Group Inc.; Cover page; Part I, Item 1 Business—Markel Insurance, U.S. Wholesale and Specialty, Programs and Solutions; Part II, Item 7/8 for group and segment risks. Accessed 2026-09-28.
6. [IT Professionals E&O Insurance](https://www.markel.com/us/commercial/professional-and-management-liability/errors-and-omissions/it-professionals). Markel; General liability section; occurrence or claims-made availability for advertising and personal injury; limited to IT-professional context.. Accessed 2026-09-30.

### General Liability Insurance Guide

7. [Commercial general liability insurance](https://www.iii.org/article/commercial-general-liability-insurance). Insurance Information Institute; Coverage A; Coverage B; Coverage C; Purchasing commercial general liability insurance. Accessed 2026-09-16.
8. [Commercial Insurance Guide](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm). California Department of Insurance; Commercial General Liability; Commercial Automobile; What Should I Expect from a Broker-Agent?; How Are Commercial Policies Rated?. Accessed 2026-09-16.
9. [Commercial General Liability Coverage Form](https://www.hiscox.com/documents/partner-agent/specimen_forms/GL_Form.pdf). ISO; specimen hosted by Hiscox; I.A pp.1–5; I.B pp.6–7; I.C pp.7–8; Supplementary Payments p.8; II pp.9–10; III p.10; IV pp.10–12. Accessed 2026-09-16.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Aon Reviews

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/aon/reviews).

## Markel Insurance Reviews

Review Score: 7.5 / 10 from 2 rated sources, equally weighted.

There is little public customer feedback on Markel. Trustpilot shows 2.5 out of 5 from just 5 reviews, and BBB lists 12 complaints closed in the last three years.

- J.D. Power: Commercial Lines Insurers agent satisfaction score 726 (out of 1,000). 2022 commercial-lines independent-agent satisfaction study and 2025 small-commercial customer study; these use different populations and measures Period: 2022. Checked 2026-09-29. [2025 U.S. Small Commercial Insurance Study](https://www.jdpower.com/business/press-releases/2025-us-small-commercial-insurance-study); [2022 U.S. Independent Agent Satisfaction Study](https://www.jdpower.com/sites/default/files/file/2022-10/2022134%20U.S.%20Independent%20Agent.pdf)
- Trustpilot: TrustScore 2.5 (out of 5); 5 reviews. Trustpilot brand-level page for markel.com. It mixes products and is not mapped to one legal insurer. Checked 2026-09-29. [Markel Reviews](https://www.trustpilot.com/review/markel.com)
- BBB: BBB business grade A+. BBB business profile for Markel Insurance Company headquarters/corporate-owned locations; review and complaint submissions may include other products and affiliates Checked 2026-09-29. [Markel Insurance Company Business Profile](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547); [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)
- BBB: Complaints 12; 12 reviews. BBB profile for Markel Insurance Company; complaints may include other Markel products and affiliates and BBB says not all submissions are displayed. Period: last 3 years, as displayed 2026-09-29. Checked 2026-09-29. [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/markel/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-markel/general-liability.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)