Business Interruption Insurance for Clothing Manufacturers: A Practical UK Guide

Why business interruption matters in clothing manufacturing

Clothing manufacturing is a high-cadence business: you buy fabric and trims, schedule production lines, rely on specialist machinery, and ship to retailers or direct-to-consumer customers with tight deadlines. When something forces you to stop or slow production, the biggest cost often isn’t the damaged building or equipment—it’s the lost trading time.

Business interruption (BI) insurance is designed to replace the profit and cover ongoing costs while you recover from an insured event. For clothing manufacturers, it can be the difference between missing one season’s drop and losing key accounts for good.

What business interruption insurance actually covers

BI cover usually sits within a commercial combined or property policy. It responds when an insured event (most commonly fire, flood, storm, escape of water, theft, malicious damage) causes physical damage at your premises and that damage leads to an interruption.

Typical BI cover can include:

• Loss of gross profit (or loss of revenue, depending on wording): helps replace the profit you would have earned.
• Ongoing fixed costs: rent, business rates, finance agreements, certain salaries, utilities standing charges.
• Increased cost of working (ICOW): extra costs you spend to keep trading, such as outsourcing production, renting temporary premises, or paying overtime.
• Claims preparation costs: fees for accountants or specialists to evidence the loss.

The goal is simple: keep your business financially stable while you get back to normal.

Clothing manufacturing risks that commonly trigger BI claims

Clothing manufacturers have a distinct risk profile because of machinery, heat processes, stock values, and supply chain dependencies.

Fire and smoke damage

Cutting rooms, sewing lines, pressing/finishing areas and storage can all be affected by fire. Even a small incident can lead to smoke contamination and a long clean-up, which can stop production.

Flood and escape of water

Flooding can damage stock, patterns, packaging, and electrical systems. Escape of water (for example, a burst pipe) can be just as disruptive, especially if it affects electrics or causes mould risk.

Machinery breakdown and specialist equipment

Many clothing manufacturers rely on specialist machines: automated cutters, embroidery machines, industrial sewing machines, heat presses, steam tunnels, and packing lines. If a critical machine fails, the interruption can be immediate.

Note: machinery breakdown is not always included under standard property damage. If you want BI to respond to breakdown, you typically need engineering/machinery breakdown cover with BI extension.

Supply chain disruption

If your fabric supplier has a fire, or a key trim supplier can’t deliver, your production schedule can collapse. This is where supplier extension (also called contingent BI or denial of access/supplier/customer extensions) can be important.

Denial of access

If the fire is next door, or the police cordon off your industrial estate, you may not be able to access your premises even if you’re not physically damaged. Some policies include denial of access, but it’s often limited and needs careful review.

Cyber events

Manufacturers increasingly rely on ERP, stock systems, automated cutting files, and online order processing. A ransomware incident can stop production planning and shipping.

Cyber-triggered BI is typically covered under a cyber insurance policy rather than a standard property/BI wording.

Key BI terms (in plain English)

BI policies can look technical. These are the terms that matter most.

Indemnity period

This is the maximum time the insurer will pay for your interruption. Common indemnity periods are 12, 18, 24, or 36 months.

For clothing manufacturers, seasonality matters. If a fire in March means you miss a summer range, you may not feel the full impact until later in the year. That’s why 12 months can be tight for some businesses.

Gross profit (insurance definition)

“Gross profit” in BI insurance is not always the same as gross profit in everyday accounting.

It is usually based on:

• Turnover (sales) minus uninsured working expenses (costs that reduce when you stop trading, such as some raw materials)

The exact definition varies by insurer. Getting this right is crucial, because it drives the sum insured.

Sum insured and the average clause

You choose a BI sum insured. If it’s too low, the insurer may apply average, meaning your claim payout is reduced proportionally.

Example: if you should have insured £1,000,000 but only insured £500,000, you may only receive 50% of what you claim, even if the loss is genuine.

Increased cost of working (ICOW)

ICOW covers extra spending to reduce the interruption, but it’s usually capped by what the insurer would have paid if you had not spent the money.

For clothing manufacturers, ICOW might include:

• Outsourcing sewing to a partner factory
• Hiring temporary warehouse space
• Paying for express freight to catch up
• Overtime to clear backlogs

Waiting period (time excess)

Some BI extensions (especially denial of access or utilities) have a waiting period, such as 24, 48, or 72 hours. That means the cover only starts after that time.

What BI doesn’t cover (common gaps)

BI is powerful, but it isn’t “anything that hurts revenue.” Common limitations include:

• No physical damage trigger: standard BI often requires insured damage at your premises. Pure supply chain delays without damage may not be covered unless you have specific extensions.
• Uninsured perils: if flood isn’t insured under your property section, BI won’t respond to flood-related interruption.
• Pandemics and communicable disease: many policies have exclusions or strict limitations.
• Wear and tear / poor maintenance: breakdown due to lack of maintenance may be excluded.
• Known issues: if you were already struggling to trade, the insurer will look at the “but for” test (what would have happened anyway).

This is why policy wording and extensions matter.

How to choose the right indemnity period for a clothing manufacturer

Ask: if your main site was out of action tomorrow, how long until you are genuinely back to normal trading?

Consider:

• Time to rebuild or refit premises
• Lead time on replacing machines (some are imported)
• Time to re-source fabric and trims
• Time to regain retailer confidence and re-secure orders
• Seasonality: missing a key range can affect the next cycle

Many manufacturers find 18–24 months is more realistic than 12 months, but it depends on your operation.

How to set the BI sum insured (a practical approach)

A broker will normally help you calculate this, but here’s a sensible starting point.

1. Estimate annual turnover (next 12 months, not last year if you’re growing).
2. Identify uninsured working expenses (costs that would stop or reduce if you can’t trade—often raw materials, some packaging, some carriage).
3. Calculate insured gross profit using the policy definition.
4. Apply the indemnity period: if you choose 24 months, you may need roughly two years’ worth of insured gross profit.
5. Add a growth allowance: if you expect to grow 10–20%, build that in.

Getting this wrong is one of the most common causes of BI underinsurance.

Extensions worth considering for clothing manufacturers

Not every business needs every extension, but these are often relevant.

Supplier and customer extensions (contingent BI)

If you rely on one or two key fabric suppliers, dye houses, or fulfilment partners, contingent BI can be valuable.

Utilities and services

Loss of electricity, gas, or water can stop production. Some policies offer utilities BI extensions, often with sub-limits and waiting periods.

Prevention of access / non-damage denial of access

Useful if your premises are inaccessible due to an incident nearby. Check the triggers and time limits carefully.

Book debts

If you sell to retailers on credit terms, book debts cover can help if records are damaged and you can’t collect what you’re owed.

Loss of attraction (limited relevance)

More common for retail, but if you have a factory shop or showroom, it may be worth discussing.

What insurers will want to know about your business

To quote BI properly, insurers typically ask about:

• Premises construction and fire protections (alarm, sprinklers, compartmentation)
• Housekeeping and storage (fabric rolls, flammables, waste management)
• Machinery maintenance and inspection routines
• Business continuity planning (backup suppliers, alternative sites)
• Stock values and how they fluctuate seasonally
• Largest customers and concentration of turnover
• Any previous claims or incidents

Being prepared with clear answers can improve pricing and reduce coverage gaps.

Reducing BI risk: practical steps that also help insurance

Insurers like evidence that you can recover quickly. Practical actions include:

• Mapping critical machines and having contingency plans
• Keeping key patterns, CAD files, and production data backed up securely
• Splitting stock across locations where possible
• Setting up secondary suppliers for core fabrics and trims
• Documenting a basic business continuity plan (who does what, who you call, where you can operate)
• Improving fire safety: waste removal, safe storage, PAT testing, clear exits

These steps can reduce downtime and strengthen your insurance presentation.

How a BI claim works (what to expect)

If you have an incident:

1. Notify the insurer early and follow claims instructions.
2. Document the interruption: dates, affected lines, cancelled orders, extra costs.
3. Track increased costs separately (outsourcing, overtime, temporary premises).
4. Work with loss adjusters: they will assess damage and the financial impact.
5. Provide management accounts and forecasts to evidence what you would have earned.

Good record-keeping makes BI claims smoother and faster.

Common mistakes clothing manufacturers make with BI

• Choosing a 12-month indemnity period when 18–24 months is needed.
• Insuring based on last year’s figures without allowing for growth.
• Not matching BI cover to the real bottleneck (for example, one critical machine).
• Assuming supply chain disruption is covered without adding the extension.
• Forgetting that some perils (like flood) may be excluded or restricted.

Quick checklist: is your BI cover fit for purpose?

• Do you know your indemnity period and why you chose it?
• Is your sum insured based on the policy definition of gross profit?
• Have you allowed for growth and seasonality?
• Do you rely on key suppliers or customers that should be named?
• Would machinery breakdown stop production—and is it covered?
• Are flood and escape of water included where relevant?

Talk to a specialist broker

Business interruption insurance is one of the most valuable covers for clothing manufacturers, but it needs to be set up carefully. The right indemnity period, correct sums insured, and the right extensions can protect your cashflow and help you recover without losing momentum.

If you’d like, we can review your current cover, talk through your production process and supply chain, and recommend a BI structure that fits how you actually trade.

Call Insure24 on 0330 127 2333 or visit insure24.co.uk to discuss business interruption insurance for clothing manufacturers.