There is no single product called “small business insurance”: it is a bundle of separate policies, and the right bundle for a freelance designer in a spare room looks nothing like the right bundle for a café with six staff and a delivery van. Buy too little and one claim can wipe out years of profit; buy everything and you pay for risks you do not face.
This guide sorts the covers into three groups: the one the law demands, the ones clients and landlords often require, and the ones worth adding once the basics are in place, with realistic cost ranges so you can budget properly.
The one cover the law demands: employers’ liability
If you employ anyone, employers’ liability insurance is compulsory in Great Britain under the Employers’ Liability (Compulsory Insurance) Act 1969. It covers compensation and legal costs if an employee is injured or made ill by their work.
The rules that matter are simple. You must have at least £5 million of cover, bought from an authorised insurer, from the day your first employee starts. The fine for trading without it is up to £2,500 for every day you are uninsured, and there is a further fine of up to £1,000 if you fail to display your certificate where staff can see it or produce it to an inspector.
Exceptions are narrow: a sole trader with no employees does not need it, and neither does a limited company whose only employee is a director owning at least half the shares, though the exemption ends the moment anyone else joins. Casual workers, apprentices and some volunteers can count as employees, so if someone works under your direction, assume they count and check with your insurer. If you are planning your first hire, our guide to the cost of hiring your first employee in the UK covers the other costs that land on day one.
The covers clients and landlords will ask for
No law forces most businesses to buy public liability insurance, but in practice it is close to essential. It pays out if a member of the public is injured or their property damaged by your business: a customer tripping in your shop, or a passer-by hit by something falling from scaffolding. Cover is usually sold in steps of £1 million, £2 million, £5 million and £10 million. A home-based freelancer may manage with £1 million; contractors on commercial sites often need £5 million or £10 million.
Professional indemnity is the equivalent cover for advice and expertise. If your work is wrong, late or negligent and costs a client money, this policy responds: the accountant whose error triggers a tax bill, or the IT contractor whose faulty code takes a client’s system down. It is not legally required for most professions, but some regulators and professional bodies require it, and larger clients routinely write it into contracts. Note one trap: professional indemnity is usually sold on a “claims-made” basis, meaning it only responds to claims made while the policy is in force. If you stop trading or switch insurer, buy run-off cover, or a claim about old work can land with no policy behind it.
Product liability matters if you make, import or sell physical goods, covering injury or damage caused by something you supplied. Retailers and wholesalers often overlook it because they did not manufacture the product, but liability can still reach them.
Protecting your premises, stock and income
If you rent or own premises, buildings and contents cover protects the physical side of the business: fire, flood, theft and storm damage to the building itself, plus equipment, stock and furniture inside. Check whether your lease already makes buildings insurance your landlord’s job, and make sure the sum insured reflects replacement cost, not what you originally paid. Underinsuring is a quiet danger: many policies reduce a claim in proportion to the shortfall, so insuring £50,000 of stock for £25,000 can mean only half of a claim is paid.
Business interruption cover is the partner policy people forget until they need it. It replaces lost income and covers ongoing costs, like rent and wages, while you cannot trade after an insured event such as a fire or flood. The detail that matters most is the indemnity period: how long the policy keeps paying. Twelve months sounds generous until a rebuild takes eighteen, so a 24-month period is often worth the extra premium.
The covers small firms most often forget
Cyber insurance has moved from a nice extra to a serious consideration for any business that stores customer data, takes card payments or depends on its systems to trade. A single ransomware incident or data breach can mean recovery costs, legal advice and lost sales, which the standard business policy usually excludes.
Motor insurance deserves a separate check: a standard social and domestic car policy does not cover business driving. If you or staff drive to visit clients, carry tools or make deliveries, you need business use on the policy, and goods carried for business may need goods-in-transit cover. Getting this wrong can void a claim.
Two covers suit particular situations: key person insurance, which pays out if a founder or specialist dies or cannot work, and directors’ and officers’ insurance, which protects directors personally against claims about their decisions once a company has outside investors.
What it typically costs
Premiums vary with trade, turnover, location, claims history and limits chosen, so treat these as planning ranges, not quotes: low-risk office work sits at the bottom, construction and high-footfall premises at the top.
| Cover | Typical annual cost for a small UK business |
|---|---|
| Public liability | £50–£500 |
| Professional indemnity | £80–£1,000 |
| Employers’ liability (small team) | £60–£300 |
| Business contents (up to £50,000) | £100–£400 |
| Cyber (basic SME cover) | £150–£600 |
| Combined liability package | £200–£1,000+ |
A freelance consultant with no staff or premises may pay only £120–£220 a year for combined public liability and professional indemnity. A shop or café with staff, stock and a lease can budget £500–£1,500 for a fuller package; a construction firm will pay more again. Three comparable quotes will tell you more than any table.
Choosing by business type
Use this as a starting point, then adjust for your own contracts and premises.
| Business type | Start with | Add if relevant |
|---|---|---|
| Freelancer or consultant, home-based | Public liability, professional indemnity | Cyber, if you hold client data |
| Tradesperson | Public liability, tools and equipment | Employers’ liability once you hire, business motor use |
| Shop, salon or café | Public liability, contents and stock, business interruption | Employers’ liability, product liability |
| Agency or consultancy with staff | Employers’ liability, professional indemnity, public liability | Cyber, directors’ and officers’ |
| Online seller or maker | Product liability, contents and stock | Goods in transit, cyber |
Business structure matters too: a sole trader’s personal assets are on the line in a way a limited company’s shareholder’s are not, making adequate cover arguably more important, not less. Our comparison of sole trader vs limited company tax explains the wider trade-offs.
Five mistakes that leave businesses uncovered
First, assuming home insurance covers a home business. Standard home policies normally exclude business activity, so a client injured in your home office or business equipment stolen from your house may not be covered. Tell your home insurer you work from home, and buy standalone business cover where needed.
Second, underinsuring stock, equipment or buildings to save premium, and discovering the shortfall only when claiming.
Third, letting professional indemnity lapse without run-off cover, as described above. Claims about past work can arrive years later.
Fourth, driving for business on a social and domestic motor policy, or sending staff out in their own cars without checking their cover includes business use.
Fifth, buying a policy and never revisiting it. Turnover doubles, you hire staff, you move premises, and the policy written two years ago no longer matches the business. Review cover every renewal, and tell your insurer about material changes straight away.
How to buy well
Get at least three quotes, from direct insurers and a broker; a broker earns their fee where risks are unusual or several policies must combine, and the British Insurance Brokers’ Association can help you find one. Look past the headline premium: check the excess, exclusions, limits and whether legal expenses cover is included. A cheaper premium with a £1,000 excess and a long exclusion list is no bargain.
Confirm the insurer is authorised on the Financial Conduct Authority register, and keep certificates where you can produce them quickly: clients and landlords ask for proof at signing, not weeks later. Finally, budget the premium as a fixed annual cost. Insurance belongs in your business budget alongside rent and software, and it is one of the start-up costs worth pricing before you launch, as our guide to the cost of starting a business in the UK sets out.
Insurance will never be the most exciting line in your accounts. But bought thoughtfully, it turns a bad day, a claim, a fire or a data breach from a threat to the whole business into a problem with a price tag you can survive. Cover the risks that could genuinely hurt you, and leave the rest on the shelf.
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