Insurance for marketplace and platform startups

Reviewed by Apex Insurance Brokers · Last reviewed 2026-08-06

Marketplaces are a strange animal to insure. You aren't the seller, you aren't the buyer, and yet you're the name on the website, the brand people trust, and often the party a disgruntled user comes after first. That intermediary position — connecting two sides, taking a cut, holding the relationship — creates a risk profile that generic "startup insurance" packages rarely map cleanly onto. This guide walks through the covers that actually matter for a platform business, and how to layer them on as you move from seed to Series B.

Why does a marketplace have a different risk profile?

When you run a two-sided platform, you're facilitating transactions between parties you don't fully control. A seller lists goods you never handle. A service provider does work you never supervise. A guest stays in a host's property you've never visited. In each case, if something goes wrong, the injured party often can't easily tell where your responsibility ends and the counterparty's begins — and they'll frequently name the platform in a claim regardless, because you're the visible, well-capitalised brand in the middle.

That's the distinctive exposure: you carry reputational and legal risk for activity happening one step removed from you. Your terms of service will try to push liability onto users, and good drafting matters enormously, but contractual disclaimers don't stop someone bringing a claim, and they don't always hold up. Insurance is what sits behind the terms when they're tested. The practical questions a broker will ask are: what flows across your platform, how much control do you exert over quality, and where would a court or a claimant realistically look for redress?

Public and product liability: the exposure from your users and their goods

Public liability covers claims from third parties for injury or property damage connected to your business activities. For a marketplace, the interesting edge is how far "your activities" reach into what your users do. If your platform arranges services performed in the physical world — cleaners, tradespeople, tutors, event hosts — there's a real argument that harm arising from those bookings can land at your door, especially if you vet providers, set standards, or handle payment.

Product liability is the parallel concern for goods marketplaces. If you facilitate the sale of physical products, you need to understand where you sit in the supply chain. A pure listings platform is in a different position from one that takes possession, own-brands, imports, or fulfils orders — and the more you touch the product, the more you can look like a "producer" or supplier in the eyes of consumer protection law. That distinction drives whether product liability belongs on your policy and at what limit.

• Map every point where a user, their goods, or their service could cause injury or damage to someone else.
• Be honest with your broker about how much you vet, curate, or fulfil — it changes the cover you need.
• Check what your seller and provider terms require of them (their own liability cover), and whether you can verify it.

These are judgement calls, not box-ticking, which is exactly why a marketplace benefits from a broker who has seen the sector rather than a self-serve form. Speak to an Apex specialist about how your specific model maps to liability cover.

Professional indemnity: when your platform is the advice or the algorithm

Professional indemnity (PI) responds to claims of financial loss caused by a mistake, negligent advice, or a failure to deliver what you promised. Platforms trip into PI territory more often than founders expect. If your matching engine recommends providers, your pricing tool sets rates, your ratings influence decisions, or your software is the thing customers rely on to run part of their business, then a failure of that system can cause a user pure financial loss — and that's PI, not public liability.

SaaS-style and tech-enabled platforms in particular often need PI (sometimes written as a combined tech/media/PI wording) because your "product" is intangible: uptime, data accuracy, integrations, and the promises in your contracts. If you're weighing this alongside your broader technology exposure, our guide to professional indemnity insurance goes deeper on how the cover responds.

Cyber cover: you're a honeypot of two-sided data

A marketplace holds data on both sides of every transaction — buyers and sellers, often including payment details, addresses, ID verification, and behavioural data. That concentration makes you an attractive target and raises the stakes of a breach, because an incident can harm two populations at once and trigger obligations under UK data protection law.

Cyber insurance typically covers incident response, breach notification costs, business interruption from an outage, and liability to affected parties, alongside access to specialists who manage the incident itself. For a platform, the operational side matters as much as the payout: if your marketplace goes down, both sides stop transacting and your revenue stops with it. When you're assessing this, think about payment flows too — if you hold funds or process card payments, that shapes both your cyber exposure and your compliance obligations. Our overview of cyber insurance for startups covers the fundamentals.

Larger or more complex risk? Speak directly to a director — call 0117 325 0027 or email info@apexinsurancebrokers.co.uk.

Directors' & officers' insurance: usually your investors' ask

Directors' & officers' (D&O) insurance protects the personal assets of your directors and officers if they're pursued for decisions made running the company — from regulatory investigations to disputes with investors, employees, or competitors. It's worth being precise here: D&O is not a legal requirement. What typically drives founders to buy it is investors. Many term sheets, commonly from Series A onward, require the company to put D&O in place as a condition of the round, and your new board members will expect the protection before they join.

For marketplaces the exposure is real beyond just satisfying an investor: your directors make decisions about which users to allow, how to handle disputes, how to treat funds, and how to comply with a shifting regulatory backdrop — all fertile ground for claims. If you want the mechanics of what D&O does and doesn't cover, read our explainer on directors' & officers' insurance before your next board meeting.

What about employers' liability?

This one is a legal requirement. Once you employ staff, Employers' Liability (Compulsory Insurance) Act 1969 requires you to hold employers' liability insurance, with only narrow exceptions (for example, some businesses employing only close family members, or certain public bodies). It covers claims from employees who are injured or made ill through their work. There are penalties for failing to hold it while you have staff, so it's one of the first covers to arrange as soon as you make a hire — don't let it slip because the rest of your programme feels more sector-specific.

What insurance do I add at each funding stage?

You don't buy everything on day one, and you shouldn't. The right programme scales with headcount, revenue, data, and the promises in your contracts and term sheets. Here's a sensible way to think about the progression — treat it as a starting map, not a rulebook, because your model dictates the detail.

Seed: get the fundamentals in place

• Employers' liability as soon as you have your first employee — it's the law.
• Public (and, if relevant, product) liability once real transactions flow across the platform and users or their goods create third-party exposure.
• Cyber early, because you start collecting two-sided personal data almost immediately.
• Professional indemnity if your software or recommendations are what customers rely on, or if early contracts require it.

Series A: satisfy the term sheet and match your growth

• D&O is commonly required by investors at this stage — line it up before completion so it isn't a last-minute scramble.
• Review liability and PI limits upward as transaction volume, customer contracts, and counterparty size grow.
• Strengthen cyber as your data holdings and the cost of downtime increase.

Series B and beyond: institutional-grade cover

• Higher limits across the board to reflect balance-sheet size and the depth of counterparties who might claim.
• Broader D&O as the board and investor base grow more sophisticated and scrutiny increases.
• International exposures if you've expanded into new territories — cover often needs to follow you, and terms vary by jurisdiction.
• Specialist add-ons tied to your specific model (for example, cover connected to holding client funds, or regulated activities), which are worth reviewing with a specialist rather than assuming a standard wording responds.

The illustrative limits you'll hear thrown around — £1m, £5m, £10m — are options, not answers. What's right depends on your contracts, your investors' requirements, and your realistic worst case. That's a conversation, not a dropdown.

How Apex helps marketplace founders

We work with venture-backed founders through every round, so we understand the rhythm: the term-sheet clause that lands at 6pm, the diligence questionnaire that asks for evidence of cover, the co-founder who wants to know why the platform is exposed to a seller's mistake. Rather than sell you a fixed package, we map your actual model — what flows across the platform, how much you control, what your contracts and investors require — and build cover that fits it, then adjust as you scale. No jargon, no over-buying, and a real person who picks up the phone when a claim or a renewal question lands.

Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This article is general information, not advice on a specific policy or a recommendation to buy any product.