If you’re choosing a commercial insurance broker, one of the first decisions you’ll face is whether to go with a large corporate brokerage or an independent. It’s not always an obvious choice, and both models have their strengths. Here’s an honest look at how they compare, and where an independent broker like Castlemead fits in.
What Is a Corporate Insurance Broker?
Corporate brokers, names like Marsh, Aon, Towergate, and Gallagher, are large, often multinational businesses. They employ thousands of people, operate across dozens of countries, and handle some of the biggest insurance programmes in the world.
Their strengths:
- Scale and buying power with major insurers
- Dedicated teams for very large or very complex risks
- Global reach and international compliance infrastructure
- Brand recognition
Their limitations for mid-market businesses:
- You may be handled by junior staff or passed between teams
- Standardised processes that don’t always flex to your needs
- Higher overheads often reflected in fees or commission
- Less appetite for smaller accounts: you can end up feeling like a number
What Is an Independent Insurance Broker?
An independent broker isn’t owned by or tied to any insurer or insurance group. That independence means one thing above all else: the broker works for you, not for an insurer.
At Castlemead, for example, we access 80+ insurers across the UK and international markets. We’re not incentivised to place business with any particular provider. The recommendation we make is the one we genuinely believe is right for your business.
We’re a £25m gross written premium brokerage with five dedicated account executives covering the South West, South Coast, and Midlands. That’s big enough to have genuine market weight with insurers, and small enough that every client gets personal attention from a senior broker.
How They Compare in Practice
| Corporate broker | Independent broker (e.g. Castlemead) | |
|---|---|---|
| Market access | Wide, but may favour panel insurers | Whole of market, no tied arrangements |
| Service model | Account managed, often by junior teams | Direct access to senior, experienced brokers |
| Claims advocacy | Structured process, can be slow | Hands-on, personal advocacy with insurers |
| Flexibility | Standardised: one process for all clients | Tailored to each client’s business and sector |
| International | Offices in many countries | GBN, TechAssure, and Castlemead France |
| Cost | Higher overheads, often reflected in pricing | Competitive: lower overheads, market-wide pricing |
| Chartered status | Not always held at local office level | Castlemead is Chartered firm-wide |
| Technical depth | Broad teams, variable specialism | Deep sector focus, e.g. 18 cyber insurer wordings reviewed line by line |
Which Is Better for a Mid-Market Business?
There’s no universal answer, but for most UK mid-market businesses, those with turnovers between £5m and £100m, with a mix of UK and sometimes international operations, an independent broker will typically offer better value and more attentive service.
The reason is straightforward: mid-market businesses often fall into a gap at corporate brokerages. Too small for the specialist teams that handle major accounts, too complex for the standardised SME products. An independent broker like Castlemead is built for exactly this space.
Take international risk as an example. A corporate broker will have offices overseas. But if you’re a UK manufacturer with a subsidiary in Poland or Bulgaria, you don’t necessarily need a broker with 40 offices: you need a broker who understands the contractual risks of cross-border operations, can coordinate property, liability, financial lines, and cyber programmes across territories, and can do it without the overheads of a global corporate structure. That’s exactly what we do, through Castlemead France and the GBN and TechAssure networks.
Where Does Castlemead Fit?
Castlemead is an independent, Chartered, FCA-authorised broker founded in Bristol in 1987. We specialise in UK mid-market businesses across sectors including advanced manufacturing, food and drink, technology and cyber, property, aviation, construction, and life sciences, with a particular strength in international risk advisory through our French office and global broker networks.
Our Managing Director, Richard Ingleby ACII, is unusual in the broking world: he has a working background in IT and software development alongside his insurance qualifications, which gives us a genuine edge in understanding technology-related risks and cyber exposures.
We’re not trying to compete with Marsh on scale. We compete on expertise, independence, and the quality of advice. Our clients stay with us because we know their business, we answer the phone, and we fight their corner when it matters.
Frequently Asked Questions
What is the difference between an independent and a corporate insurance broker?
An independent broker is not owned by or tied to any insurer, so it works solely in the client’s interest and accesses the whole market. A corporate broker, such as Marsh, Aon, or Towergate, is typically a large, often multinational business that may favour panel insurers or group arrangements. For mid-market businesses, this distinction matters because independent brokers generally offer more tailored advice, direct access to senior professionals, and pricing free from corporate overheads. See our full comparison table above for a side-by-side breakdown.
How does Castlemead compare to large brokers like Marsh or Towergate?
Castlemead is an independent, Chartered broker that competes on expertise and personal service rather than scale. With £25 million in gross written premium and five dedicated account executives, Castlemead provides direct access to senior brokers rather than routing clients through junior teams. Unlike corporate brokers, Castlemead is not tied to any insurer and accesses 80+ markets including Lloyd’s syndicates. For international risk, Castlemead operates through its own French office (Castlemead France), the Global Broker Network across 150 countries, and TechAssure, giving mid-market clients the reach of a corporate brokerage with the independence and responsiveness of a specialist.
Are independent brokers better for mid-market businesses?
For most UK mid-market businesses with turnovers between £5 million and £100 million, independent brokers typically offer better value. Mid-market businesses often fall into a service gap at corporate brokerages, too small for the specialist teams and too complex for the standardised SME products. Independent brokers like Castlemead are built for this space, offering sector-specific expertise (for example, reviewing cyber policy wordings across 18 insurers line by line) combined with lower overheads and more competitive pricing. See our guide on how to choose a broker for more detail.
Do independent brokers have the same market access as large corporate brokers?
Yes, in most cases. An independent broker like Castlemead accesses 80+ insurance markets, including specialist underwriters and Lloyd’s syndicates that do not sell direct to the public. The difference is that independent brokers have no tied arrangements or panel restrictions, so the recommendation is always based on which insurer and policy best fits the client’s needs. For international placements, Castlemead uses Castlemead France, GBN (150 countries), and TechAssure to provide coverage in virtually any territory.
Can an independent insurance broker arrange international cover?
Yes, although not all do. Castlemead provides international risk advisory through three channels: Castlemead France (its own office in Compiegne, near Paris, with EU passporting rights), the Global Broker Network covering 150 countries, and TechAssure for technology and cyber risks. This gives Castlemead the ability to coordinate multi-territory programmes covering property, liability, financial lines, and cyber for UK businesses with overseas operations. See our Global Insurance Programmes page for full details.
What is Chartered status and why does it matter when choosing a broker?
Chartered status is awarded by the Chartered Insurance Institute (CII) and represents the highest professional standard in UK insurance broking. To hold Chartered status, every member of the firm must meet strict requirements for qualifications, ethical conduct, and continuing professional development. Not all brokers hold it, and not all corporate brokers hold it at every local office. Castlemead has been Chartered firm-wide, meaning every client benefits from the same standard of professional advice regardless of which account executive they work with.
