Quick answer
Once liability has been admitted by the at-fault insurer, the claims handler will often offer to handle everything: send their preferred repairer to inspect, arrange repair through their network, provide a courtesy car from their hire fleet, and settle the claim quickly. The offer sounds helpful and many non-fault drivers accept. The problem is that the at-fault insurer's network is built around minimising their indemnity spend, not maximising the quality of the non-fault driver's repair or the like-for-like character of the replacement vehicle. This post explains the conflict and why the non-fault driver's right to choose is important.
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Why you should not use the at-fault insurer's chosen repairer or hire vehicle
Once liability has been admitted by the at-fault insurer, the claims handler will often offer to handle everything: send their preferred repairer to inspect, arrange repair through their network, provide a courtesy car from their hire fleet, and settle the claim quickly. The offer sounds helpful and many non-fault drivers accept. The problem is that the at-fault insurer's network is built around minimising their indemnity spend, not maximising the quality of the non-fault driver's repair or the like-for-like character of the replacement vehicle. This post explains the conflict and why the non-fault driver's right to choose is important.
The at-fault insurer's network is their cost-control mechanism
Insurers operate approved repairer networks for two reasons: to standardise repair quality and to control cost. The cost control is the more important reason commercially. Network repairers operate on contracted hourly rates, agreed parts pricing and capped scope. The arrangement is good for the insurer's margin and reasonable for own-policy claims where the claimant is also their customer.
For a non-fault claim, the calculus is different. The claimant is not the at-fault insurer's customer; the claimant is its counterparty. The cost control that benefits the at-fault insurer's margin is now in tension with the quality of the non-fault driver's repair. The repairer's loyalty is to the insurer that pays them, not to the non-fault driver who walks in with a damaged vehicle.
DETAIL
Section 3 of the walkthrough.
What this looks like in practice
Several patterns recur. Repair scope reduced from full panel replacement to panel repair to save parts cost; aftermarket or non-genuine parts substituted for OEM where the difference is detectable on inspection but not always disclosed; ADAS calibration omitted on a vehicle where the system needs it after airbag or sensor disturbance; lower-grade paint or rapid blend processes that look right initially but degrade faster than a manufacturer-standard finish.
Each of these saves the at-fault insurer money and slightly disadvantages the non-fault driver. The cumulative effect over the life of the vehicle is a repair that does not match what an independent engineer's report would have specified. The non-fault driver does not always notice the difference until a future event reveals it.
The non-fault driver's right to choose the repairer
There is no statutory right to a particular repairer; there is a duty to mitigate loss, which means the non-fault driver must accept a reasonable repair. But 'reasonable' does not mean 'cheapest'. A repair to manufacturer specification at a competent independent or main-dealer repairer is reasonable; a substandard repair through a cost-controlled network is, on the engineer's evidence, unreasonable.
In practice, the non-fault driver who wants to use a different repairer asserts the choice in writing, supplies the engineer's report identifying the scope, and asks the at-fault insurer to authorise. Most insurers do, after the initial push for their own network. The repair runs through the chosen repairer at the agreed scope.
The same logic applies to courtesy and hire vehicles
The at-fault insurer's offered courtesy car is similarly shaped by their cost control. The hire fleet they use is likely to provide a small economy class vehicle, often with mileage caps, often without the like-for-like specification the non-fault driver is entitled to. A driver whose own vehicle was a 7-seat MPV is offered a 5-seat hatchback; a tradesman whose van had load capacity is offered a panel van without racking; a driver whose vehicle was ULEZ-compliant is offered a non-compliant courtesy car in a ULEZ borough.
Each of these is a like-for-like failure dressed as a courtesy. The fix is the credit hire route through the accident management partner, with a properly specified replacement that matches the damaged vehicle. The cost is recoverable from the at-fault insurer; the offered courtesy car can be politely declined.
When using the at-fault insurer's network is genuinely fine
There is one common scenario in which the at-fault insurer's network is fine: minor cosmetic damage on a low-value common-make vehicle, where the cost differential between an in-network repair and an independent repair is small and the non-fault driver is not particularly attached to manufacturer specification. The economy of the in-network repair is not materially different from what an independent would charge.
Even in this scenario, the engineer's inspection should still happen. The principle is not 'always avoid the network' but rather 'always have the inspection and choose the repairer with eyes open'. Some non-fault drivers genuinely prefer the convenience of the network arrangement; others prefer the independence. Both are defensible commercial choices once the inspection has happened.
What about main-dealer repair vs independent
For prestige and modern vehicles with substantial driver assistance technology, main-dealer repair is often the right choice because the dealer has manufacturer-specific tooling, ADAS calibration equipment, parts access and trained technicians. The cost is higher than an independent body shop, but the repair quality is more reliable and the impact on subsequent resale value is smaller.
For older or simpler vehicles, a competent independent repairer with PAS 125 / BSI 10125 accreditation can deliver an excellent repair at lower cost. The choice depends on the vehicle, the damage and the future plans for the vehicle. The accident management partner's engineer can advise on the trade-off.
Documentation and warranty
Whichever repairer is used, the documentation matters. Keep the repair invoice with itemised parts and labour; keep photographs from the repairer of the disassembled vehicle showing the damage extent; keep the warranty documentation for the repair. Most reputable repairers warrant their work for two to five years.
Where the warranty is from a network repairer for an at-fault insurer, the warranty is sometimes only honoured at network locations. An independent repairer's warranty is usually portable. For a non-fault driver who does not want to be tied to a network for future warranty work, the independent route has a small but real long-term advantage.
DETAIL
Section 9 of the walkthrough.
How to assert the choice in writing
When the at-fault insurer offers their network, the response is straightforward: 'Thank you for the offer. I will be using [chosen repairer] for the repair, on the basis of the independent engineer's report attached. Please confirm authorisation at the agreed scope and I will arrange the repair.'
Most insurers authorise within a few days. Where they push back, the accident management partner takes over the negotiation. Where the authorisation does not arrive, the repair can be carried out anyway and the cost recovered as part of the claim, subject to the engineer's report being defensible. The claimant should not delay repair indefinitely waiting for authorisation; the duty to mitigate runs in both directions.
Take action
If you have just been in a non-fault collision, the fastest way to protect your claim is to open the file with us inside the first hour. We dispatch recovery, lodge the relevant CCTV requests inside the retention window, and notify the third-party insurer for you.
