Business Interruption Insurance for Manufacturing Companies: A Practical UK Guide

Why business interruption matters in manufacturing

Manufacturing is built on momentum: raw materials arrive, machines run, orders ship, and invoices get paid. When that flow is disrupted, the biggest cost is often not the broken equipment or the damaged building — it’s the lost trading income and the ongoing bills that don’t stop.

Business interruption (BI) insurance is designed to protect your profit and fixed costs when you can’t trade normally after an insured event (usually linked to your property damage cover). For manufacturers, BI can be the difference between a temporary setback and a long-term cash crisis.

What business interruption insurance typically covers

BI cover is usually part of a commercial combined or manufacturing package policy. While wording varies by insurer, most BI sections focus on three core areas:

• Loss of gross profit (or loss of revenue / loss of income): the shortfall caused by reduced turnover.
• Increased cost of working (ICOW): extra costs you spend to keep trading or to reduce the loss (for example, outsourcing production or hiring temporary equipment).
• Additional expenses and fixed costs: ongoing overheads such as rent, business rates, salaries (where covered), finance payments, utilities, and certain contractual costs.

The key point: BI is triggered by an insured cause of loss. If the event isn’t covered under your property section (or isn’t an insured BI extension), BI may not respond.

Common manufacturing scenarios where BI can apply

Manufacturers face a mix of property risks and operational dependencies. BI is particularly relevant in scenarios like:

• Fire in a production area causing smoke damage and shutdown
• Flood or escape of water damaging stock, electrics, or machinery
• Storm damage to roofs leading to water ingress and contamination
• Theft or malicious damage affecting tools, copper, control panels, or vehicles
• Machinery breakdown (if insured) stopping a critical line
• Contamination or quality failure leading to disposal and rework (where insured)

Even if your premises is intact, a shutdown can happen because a key service or supplier is affected — which is why BI extensions matter.

Understanding “gross profit” (and why it’s not your accounting gross profit)

BI policies use a specific definition of gross profit. It often includes:

• Turnover
• Less uninsured working expenses (costs that reduce when you stop trading)

For manufacturers, uninsured working expenses might include raw materials, packaging, carriage, or certain variable production costs. But the exact definition depends on your policy wording.

This matters because if the definition doesn’t match how your business actually operates, you can end up underinsured without realising it.

The indemnity period: the most common mistake

The indemnity period is how long the insurer will pay for the interruption — for example 12, 18, 24, or 36 months.

Manufacturing often needs a longer period because recovery isn’t just “reopen the doors”. You may need time to:

• Replace or repair specialist machinery
• Re-certify equipment and processes
• Rebuild tooling and jigs
• Re-qualify suppliers and materials
• Re-win customer confidence and rebuild order books

A 12-month indemnity period can be tight for a manufacturer with long lead times, bespoke plant, or regulated products. Many businesses only discover this after a claim.

Key BI extensions manufacturers should consider

Not every BI loss starts with a fire in your own building. Extensions can broaden cover (and are often where manufacturing claims become more realistic).

1) Supplier and customer (contingent business interruption)

If a key supplier suffers an insured event and can’t deliver, you may have to stop production. Likewise, if a key customer is shut down, your orders may drop.

Look for:

• Named supplier/customer options (specific businesses)
• Unnamed options (any supplier/customer, usually with lower limits)
• Appropriate limits and indemnity periods

2) Denial of access

If you can’t access your site due to an insured event nearby (for example, emergency services close roads after a major fire), denial of access can help.

3) Public utilities / services

Manufacturers rely on power, gas, water, telecoms, and sometimes compressed air or specialist services. Utility interruption extensions can cover loss caused by damage to:

• Electricity substations
• Water pumping stations
• Gas supply infrastructure

Check:

• The radius (how far from your premises the damage can occur)
• Waiting periods (some wordings have time deductibles)
• Whether it includes overhead lines and on-site transformers

4) Loss of attraction (where relevant)

This is more common in retail and hospitality, but some manufacturers with on-site trade counters, showrooms, or visitor-led sales may benefit.

5) Infectious disease / notifiable disease (limited)

Post-pandemic, many wordings changed. If your manufacturing involves public-facing areas or visitor access, ask what is and isn’t included.

6) Machinery breakdown and engineering BI

If your business depends on a small number of critical machines (CNC, injection moulding, laser cutters, bottling lines, chillers), consider engineering cover that includes:

• Machinery breakdown
• Business interruption following breakdown

This can be essential because standard property BI may not respond to internal mechanical failure.

Stock, work in progress, and “bottleneck” risks

Manufacturers often have:

• High-value raw materials
• Work in progress (WIP)
• Finished goods stock
• Customer-owned goods

A BI claim can be complicated if WIP is damaged or if a bottleneck machine is lost. Two practical steps help:

• Map your production line and identify single points of failure
• Ensure sums insured and BI limits reflect the true impact of losing that bottleneck

If one machine controls the pace of the whole factory, the BI exposure is bigger than the replacement cost of the machine.

Increased cost of working: what “reasonable” really means

ICOW is often limited to costs that are economical — meaning the insurer expects the spend to reduce the overall loss.

Examples that can make sense for manufacturers:

• Outsourcing a portion of production to a third party
• Leasing temporary machinery
• Paying overtime or additional shifts at an alternative site
• Expedited shipping for materials or components
• Temporary warehousing to keep dispatch moving

Keep records. Claims are smoother when you can show:

• What you spent
• Why you spent it
• How it reduced the loss

BI and contracts: penalties, service levels, and key customers

Manufacturing contracts can include:

• Service level requirements
• Liquidated damages
• Penalties for late delivery
• Minimum supply commitments

Some policies may cover certain additional costs, but contractual penalties are often restricted or excluded. It’s worth reviewing:

• Your top customer contracts
• Your policy wording on penalties and contractual liabilities

If you rely on a small number of customers, consider whether your BI limits and extensions reflect that concentration.

How to set the right sum insured (and avoid underinsurance)

Underinsurance is one of the biggest BI problems. For manufacturing, the sum insured should be based on:

• Your expected turnover for the coming year
• Your gross profit rate (as defined by the policy)
• A realistic view of recovery time
• Inflation and growth

Many insurers apply an average clause if you’re underinsured, reducing claim payments proportionally.

A practical approach:

1. Start with last year’s turnover
2. Adjust for expected growth
3. Confirm the policy’s gross profit definition
4. Stress-test the indemnity period (what if recovery takes 18–24 months?)

If your business is seasonal, make sure the policy accounts for peak periods.

Waiting periods and deductibles

Some BI extensions include a time excess (for example, the first 24, 48, or 72 hours are not covered). For manufacturers, even a short outage can be expensive.

Ask:

• Which extensions have time excesses
• Whether the main BI cover has a monetary excess
• How the policy treats partial shutdowns

Practical steps to strengthen your BI position

Insurance is one layer. The other layer is planning. Manufacturers that handle BI well usually have:

• A documented business continuity plan
• A list of alternative suppliers (including lead times)
• A plan for temporary production or subcontracting
• Clear data backups and cyber resilience
• Maintenance schedules and critical spares
• Site security and fire risk management

These steps can also improve your risk profile and, in some cases, premiums.

What BI may not cover (common exclusions and gaps)

Every policy is different, but common BI limitations include:

• Uninsured causes of loss (if property damage isn’t covered, BI may not trigger)
• Wear and tear / gradual deterioration
• Certain cyber events (unless cyber cover is in place)
• Pollution and some contamination scenarios
• Supplier failure not caused by insured damage
• Pandemic-related losses (often restricted)

The goal isn’t to scare you — it’s to make sure the cover matches your real-world risks.

Claims: what insurers will ask for

In a BI claim, insurers commonly request:

• Management accounts and financial statements
• Sales orders, production records, and dispatch notes
• Payroll costs and staffing records
• Evidence of increased costs of working
• Repair timelines and contractor invoices
• Proof of mitigation steps

Good record keeping and a clear narrative of what happened can speed up settlement.

Quick checklist for manufacturing BI cover

Use this as a starting point when reviewing your policy:

• Indemnity period: 12 / 18 / 24 / 36 months — what’s realistic?
• Gross profit definition: does it fit your cost structure?
• Critical machines: do you need engineering BI?
• Supplier/customer dependency: named and unnamed limits
• Utilities: power, water, gas, telecoms — radius and waiting period
• Stock and WIP: sums insured and valuation basis
• Claims preparation: do you have a plan and records?

When to get advice

If you manufacture regulated products, operate multiple sites, rely on a single bottleneck machine, or have high customer concentration, it’s worth getting a broker-led review. Small wording differences can change outcomes.

Call to action

If you run a manufacturing business and want to sense-check your business interruption cover — including indemnity period, supplier dependency, and machinery breakdown BI — we can help.

Speak to Insure24 on 0330 127 2333 or request a quote via our website.