Car Insurance Glossary UK 2026

Last reviewed: 26 April 2026

NCD and policy history terms

No-Claims Discount (NCD): The discount applied to the base motor insurance premium for each consecutive claim-free policy year. Maximum NCD is typically reached at five or more years (65 to 75 percent discount). ABI: abi.org.uk.

NCD Protection: A paid add-on that preserves the NCD percentage at renewal after a specified number of fault claims (typically one per year), preventing the standard two-year NCD step-back.

NCD Step-Back: The reduction in NCD years following a fault claim. Standard step-back is two years, a five-year NCD reduces to three years after one unprotected fault claim.

NCD Certificate: A written document issued by the insurer confirming the policyholder's accumulated NCD years. Required when switching insurer. Typically valid for 12 to 24 months.

Claims and Underwriting Exchange (CUE): The industry database operated by the Motor Insurance Anti-Fraud and Theft Register recording all motor insurance claims notified to UK insurers. All FCA-authorised UK motor insurers access CUE at underwriting and claims stages.

Cover-tier and policy-type terms

Third Party Only (TPO): The legal minimum UK motor insurance tier, mandated by the Road Traffic Act 1988, section 143. Covers the policyholder's liability for death, injury, and property damage to third parties. Does not cover the policyholder's own vehicle.

Third Party Fire and Theft (TPFT): The middle motor insurance tier. Covers all TPO liabilities plus fire damage and theft of the policyholder's own vehicle.

Comprehensive: The highest UK motor insurance tier. Covers all TPFT protections plus accidental damage to the policyholder's own vehicle. Approximately 85 percent of UK private motor policies are Comprehensive (ABI 2025).

Agreed Value: A policy structure where the insured sum is fixed at policy inception by professional valuation, rather than assessed at market value on the date of total loss. Used for classic, collector, and high-specification vehicles.

Motor Insurance Database (MID): The central register of all valid UK motor insurance policies, operated by the Motor Insurers' Bureau (MIB). All UK policies are registered on the MID. Consumer check: askmid.com.

Pricing mechanism terms

Compulsory Excess: The fixed excess amount set by the insurer that the policyholder must contribute to any claim. Cannot be reduced by the policyholder; set based on risk profile.

Voluntary Excess: The additional excess amount the policyholder chooses at quotation, above the compulsory excess, to reduce the annual premium.

Insurance Premium Tax (IPT): UK government tax levied on most insurance premiums. Standard rate: 12 percent on motor insurance (HMRC, gov.uk). Higher rate: 20 percent on travel insurance and warranty products.

Annual Percentage Rate (APR): The annualised interest rate charged on monthly instalment premium financing. Typically 12 to 25 percent on UK motor insurance monthly payment plans. Governed by FCA Consumer Credit sourcebook (CONC).

Total Amount Payable (TAP): FCA CONC-mandated disclosure of the total sum payable under a monthly instalment plan, including all financing charges.

Thatcham Group: Insurance group assigned by Thatcham Research (1 to 50) to every UK-sold vehicle, reflecting repair cost, performance, and security. Lower group equals lower premium.

Claim process terms

First Notification of Loss (FNOL): The first contact between the policyholder and the insurer reporting an incident. Triggers claim registration and handler assignment.

Knock-for-Knock: Historic insurer arrangement where each insurer pays its own policyholder's costs without pursuing the other insurer for recovery. Largely replaced by subrogation-based recovery, though some situations still produce knock-for-knock outcomes.

Write-Off Categories: ABI-adopted categorisation of total-loss vehicles. Cat A: crushed entirely. Cat B: body shell crushed, parts salvageable. Cat S: structural damage, repairable, permanently marked. Cat N: non-structural damage, repairable, permanently marked.

Total Loss / Write-Off: A vehicle declared uneconomical to repair because repair cost approaches or exceeds market value. Settled at market value on date of loss (Glass's Guide / CAP HPI).

Subrogation: The process by which an insurer, having paid a claim, pursues recovery from the at-fault party's insurer. Invisible to the policyholder; affects insurer financial position only.

Salvage: The remnant of a total-loss vehicle. Policyholders may retain Cat S and Cat N salvage by having the salvage value deducted from the settlement.

Regulatory terms

FCA: Financial Conduct Authority, the regulator of FCA-authorised UK insurers and brokers. Register: register.fca.org.uk.

FRN: Firm Reference Number, the unique FCA authorisation identifier for each regulated firm. Verifiable at register.fca.org.uk.

ICOBS: FCA Insurance Conduct of Business Sourcebook, the FCA rulebook governing the conduct of insurance firms. Covers IPID disclosure, fair claims handling, and pricing.

CIDRA 2012: Consumer Insurance (Disclosure and Representations) Act 2012. Governs the policyholder's declaration duty, requires accurate answers to insurer questions. Non-disclosure consequences: proportionate reduction (careless) or policy void (deliberate).

MIB: Motor Insurers' Bureau, the government-backed, industry-funded organisation that operates the MID and compensates victims of uninsured or untraced drivers.

FOS: Financial Ombudsman Service, the free statutory dispute resolution service for financial services complaints. Binding on the insurer up to £415,000 per complaint.

IPID: Insurance Product Information Document, the FCA-required two-page standardised summary of key inclusions and exclusions for all motor insurance products (mandatory from October 2018).

Key Figures

DVLA-related terms in motor insurance

V5C: The vehicle logbook issued by DVLA recording the registered keeper's details. Required for vehicle sales, insurance claims, and DVLA address updates.

SORN (Statutory Off Road Notification): A DVLA declaration confirming the vehicle is kept off public roads. A SORN-declared vehicle does not require motor insurance or VED (Vehicle Excise Duty).

VED (Vehicle Excise Duty): Road tax levied by DVLA on vehicles used on public roads. Separate from motor insurance. Cannot be transferred between vehicles or owners; seller's VED is refunded automatically on sale.

CIE (Continuous Insurance Enforcement): DVLA's programme that cross-references the MID against the vehicle register to identify uninsured vehicles. Produces automatic advisory letters and Fixed Penalty Notices (£100) where no MID registration and no SORN is detected.

ANPR (Automatic Number Plate Recognition): Technology used by police to read vehicle registrations in real time and cross-reference against MID and DVLA records. Primary enforcement tool for uninsured driving detection.

Frequently Asked Questions

What does NCD stand for in car insurance?

NCD stands for No-Claims Discount, the discount applied to the base motor insurance premium for each consecutive claim-free policy year. Maximum NCD (65 to 75 percent) is typically reached at five or more years with most UK insurers.

What is FNOL in a car insurance claim?

FNOL is First Notification of Loss, the initial report of a claim to the insurer. It triggers claim registration, handler assignment, and the start of the claims process. Most policies require FNOL within 24 hours of an incident.

What do Cat S and Cat N mean on a car?

Cat S (structurally damaged, repaired) and Cat N (non-structural damage, uneconomical to repair) are write-off categories from the ABI's vehicle salvage code of practice. Both categories are permanently recorded on the vehicle's history and must be declared to any future insurer.

What is the difference between FCA and FOS?

The FCA (Financial Conduct Authority) is the regulator that authorises and supervises insurance firms. The FOS (Financial Ombudsman Service) is the independent dispute resolution service that handles consumer complaints against firms. FCA regulates the rules; FOS resolves individual disputes.

What is CIDRA 2012 in simple terms?

CIDRA 2012 (Consumer Insurance (Disclosure and Representations) Act 2012) is the law that requires policyholders to answer insurer questions accurately and honestly. Where a policyholder answers carelessly incorrectly, the insurer can reduce a claim settlement. Where the answer is deliberately wrong, the insurer can void the policy from inception.

Sources & Verification

• FCA ICOBS: https://www.fca.org.uk
• ABI Motor Insurance data: https://www.abi.org.uk
• Motor Insurers' Bureau, MID and AskMID: https://www.mib.org.uk
• Road Traffic Act 1988: https://www.legislation.gov.uk/ukpga/1988/52
• Consumer Insurance (Disclosure and Representations) Act 2012: https://www.legislation.gov.uk/ukpga/2012/6
• Financial Ombudsman Service: https://www.financial-ombudsman.org.uk
• HMRC Insurance Premium Tax: https://www.gov.uk/guidance/insurance-premium-tax
• Thatcham Research: https://www.thatcham.org

This article is for informational purposes only and does not constitute financial advice. Always verify rates with official sources before making any financial decision.