The fundamental difference
The core difference between ISR and a business pack comes down to one thing: how coverage is structured.
A business pack is a named-perils policy. It lists specific events it covers - fire, storm, theft, impact, and so on. If the cause of your loss isn’t on the list, you’re not covered.
An ISR policy works the opposite way. It is an “all risks” style policy, meaning it covers accidental physical loss, destruction or damage that is not otherwise excluded, rather than only a fixed list of events. Cover is still subject to the policy exclusions, sub-limits, conditions and the schedule, so it is broad but not unlimited. You start from broad cover and the exclusions narrow it down, rather than starting with nothing and adding cover event by event.
When a business pack makes sense
A standard business pack is generally suitable for:
- Small businesses with straightforward operations
- Low-value properties where a total loss is manageable
- Simple risk profiles - office-based businesses, small retail, service businesses
- Businesses that don’t hold significant stock
Business packs are simpler, faster to arrange, and work well for businesses that don’t need the breadth of ISR cover.
When ISR is the better choice
ISR is typically the right choice when:
- Your total insured property value runs into the millions (building, contents and stock combined), noting insurer thresholds for ISR vary
- You operate from a warehouse, factory, or large commercial premises
- Your business has significant revenue dependency on the property
- You hold high-value or perishable stock
- You have expensive machinery or plant that could break down
- You need business interruption cover as standard
- You want broader protection with fewer coverage gaps
Side-by-side comparison
Basis of cover
- ISR: All risks (accidental loss or damage not otherwise excluded, subject to limits and conditions)
- Pack: Named perils (only listed events covered)
Business interruption
- ISR: Section 2 cover can be arranged alongside the material damage section where the insured elects it and declares the figures; BI claims generally require a payable material damage claim
- Pack: Optional add-on at extra cost
Machinery breakdown
- ISR: Available as extension
- Pack: Usually not available
Coverage breadth
- ISR: Broad all-risks structure, which can reduce perils-based gaps versus a named-perils pack, subject to exclusions and sub-limits
- Pack: Narrower, with gaps between named perils
Policy structure
- ISR: Single policy, one insurer
- Pack: Bundled sections, may involve multiple insurers
Customisation
- ISR: Highly customisable with extensions
- Pack: Limited flexibility
Typical premium
- ISR: Competitive for the breadth of cover
- Pack: Lower base premium, but add-ons increase cost
The cost question
A common misconception is that ISR is significantly more expensive than a business pack. In practice, when you add business interruption, machinery breakdown, and other extensions to a business pack to achieve similar coverage, the total premium is often comparable - and sometimes ISR is actually cheaper.
The real cost risk isn’t the premium. It’s the cost of being underinsured or having a gap in coverage when you make a claim.
Making the switch
Switching from a business pack to ISR is straightforward. Your broker will:
- Review your current coverage and identify any gaps
- Calculate appropriate sums insured for building, contents, stock, and revenue
- Obtain ISR quotes from multiple insurers
- Present a comparison showing coverage differences and pricing
- Arrange the new policy to start from your current renewal date
There’s no penalty for switching, and many businesses find the transition reveals they were underinsured under their old policy.
Talk to us
If you’re not sure whether ISR or a business pack is right for your situation, get in touch. We’ll review your current cover and give you a straight answer - no pressure, no jargon.