The short answer

Most UK small businesses pay somewhere between £150 and £1,500 a year for their core business insurance. A self-employed consultant working from home will sit at the lower end. A small construction firm with employees, vans and contract works cover will sit at the upper end — and a manufacturer or fleet operator will often pay considerably more.

That range is wide because “business insurance” is not a single product. It’s a stack of covers, and the right mix depends on what you do, how many people you employ, where you operate, and what you stand to lose if something goes wrong. This guide breaks the cost down properly so you can budget realistically and spot when you are paying too much.

What you are actually paying for

Before looking at numbers it helps to know what sits inside a typical business insurance policy. Most SME packages combine several of the following:

• Public liability — covers claims from members of the public or clients who suffer injury or property damage because of your business.
• Product Liability — covers claims from members of the public or clients who suffer injury or property damage because of the products you supply.
• Employers’ liability — legally required if you employ anyone, even part-time or family members. The minimum statutory limit is £5 million.
• Professional indemnity — covers losses caused by advice or services you provide. Essential for consultants, architects, accountants, IT firms and similar.
• Buildings and contents — covers your premises, stock, machinery and fixtures.
• Business interruption — replaces lost income when an insured event stops you trading. Frequently underestimated both in value and the period of cover.
• Goods in transit, tools, cyber, legal expenses and directors’ and officers’ (D&O) are common add-ons.

Two businesses with identical turnover can pay very different premiums because they need very different combinations of these covers.

Typical price ranges by cover type

The ranges below are indicative for a small UK business in 2026. They are a guide, not a quote — your actual premium will depend on the specifics of your operation.

• Public liability only (low-risk, sole trader): £70–£180 per year.
• Public liability for trades (electricians, plumbers, builders): £150–£600 per year.
• Employers’ liability (per employee, blended into a package): adds roughly £80–£250 per head.
• Professional indemnity (£250k–£1m limit): £200–£900 per year for most consultancies.
• Combined commercial package (office-based SME, up to 10 staff): £400–£1,200 per year.
• Shop, café or retail unit: £500–£1,500 per year depending on location and stock.
• Factory or manufacturing combined: from £1,500 and quickly into five figures based on building value, machinery and processes.
• Motor fleet (per vehicle, mixed cars and vans): £450–£1,800 per vehicle, often lower per-unit on larger fleets.

What actually drives your premium up or down

Insurers price risk, not businesses. Two firms in the same trade can be quoted very different premiums because of small details that change how the underwriter sees the risk. The main levers are:

• Trade and activities — high-risk trades (roofing, demolition, hot works, working at height) attract significantly higher rates.
• Turnover and wage roll — used as a proxy for exposure on liability covers.
• Claims history — typically the last five years. Even a small unpaid claim can affect terms.
• Location — postcode-level data is used for theft, flood and subsidence risk.
• Sum insured — particularly on buildings, stock and business interruption. Underinsurance is the most common reason claims get reduced.
• Security, sprinklers, fire alarms, telematics and other risk management — often unlock meaningful discounts when documented properly.
• Excess level — voluntarily increasing the excess can cut the premium, within reason.

None of this is visible on a price comparison site, which is why two businesses with similar turnover can be quoted twice the premium for essentially the same cover.

Why going direct is not always the cheapest option

Direct insurers and comparison sites work on a narrow band of standardised risks. If your business is anything other than “typical”, their pricing models will either decline you, exclude key activities, or load the premium to be safe. A broker accesses multiple insurers, including specialist markets that never appear online, and can present your risk in a way that produces a fair quote.

For straightforward office-based work the gap is often small. For trades, fleets, factories, properties with non-standard construction, or any business with a claims history, working with a broker frequently saves money outright — and almost always produces better cover for the same money.

Five practical ways to reduce your business insurance cost

If your renewal has crept up over the last few years, these are the levers most likely to bring the number back down without leaving you exposed:

• Prepare an up-to-date risk presentation. Underwriters price what they understand — vague proposals get loaded.
• Document your security and risk management properly: alarms, locks to insurer specification, fire protection, training records.
• Review your sums insured against current rebuild and replacement costs. Both over- and under-insurance cost you money.
• Consider raising your voluntary excess on covers where small claims are unlikely or uneconomic to make.
• Stop renewing on auto-pilot. The cheapest insurer this year is often not the cheapest next year, and loyalty is rarely rewarded in the commercial market.

A note on cheap policies

A low premium that fails at claim stage is the most expensive policy you can buy. Underinsurance, missed warranties (such as security or fire conditions), undeclared activities and out-of-date occupations are the four most common reasons UK SMEs see claims reduced or refused. When you compare quotes, compare the limits, exclusions and conditions side by side — not just the headline number.

How Cornerstone helps

Cornerstone is an independent insurance broker based in Leicester, supporting businesses across the East Midlands and beyond. Every client gets a dedicated account handler — not a call centre — and we can arrange a same-day review of your existing cover. Where it makes sense, we’ll tell you to stay where you are. Where we can do better, we’ll show you the numbers.

If you’d like a straightforward second opinion on what you’re paying, call us on 0116 3440 040 or request a call-back and we’ll come back to you within 30 minutes during working hours.

Frequently asked questions

Is business insurance a legal requirement in the UK?

Employers’ liability is legally required from the moment you employ anyone, with very limited exceptions. Motor insurance is legally required for any business vehicle used on the road. Other covers are not legally required but are often required by clients, landlords, lenders or contracts — public liability and professional indemnity in particular.

How much does public liability insurance cost?

For a low-risk sole trader, expect roughly £70 to £180 per year for a £1 million or £2 million limit. Trades and higher-risk activities sit between £150 and £600, sometimes higher for roofing, scaffolding or hot works.

Why has my business insurance gone up so much?

Three reasons account for most increases: insurer-wide rate hardening across the UK market, your own sums insured rising with rebuild and material costs, and claims (yours or the wider sector). A broker can compare the renewal against the rest of the market and tell you whether the increase is fair.

Can I pay monthly?

Yes. Most commercial policies can be paid by monthly premium finance, usually with a small interest charge. Cornerstone can also arrange fixed-premium or low-claims-rebate options for clients who prefer predictable budgeting.

How quickly can cover be in place?

For straightforward risks, cover can be arranged the same day. More complex risks — factories, fleets, contract works, high-value property — typically take two to five working days while underwriters review the information.

Do I need a broker if my business is small?

Not always. If you run a simple, low-risk business and your renewal price is fair, a direct policy may be fine. The moment you have employees, premises, vehicles, contracts or a claim on your record, a broker almost always saves you time, money or both.