The Department for Transport's Road Casualties Great Britain (RSGB) annual report is the definitive official source for UK road accident statistics. Published each year using data collected from police STATS19 accident reports, the RSGB report documents every reported road accident involving personal injury in Great Britain. The 2024 report records 104,258 reported collisions and 1,695 road deaths - the latter representing a long-term decline from peaks of over 6,000 annual fatalities in the 1970s, though progress on further reductions has slowed in recent years. For the insurance market, road accident data is a primary input into actuarial loss models. The ABI recorded £11.1 billion in total motor claims paid in 2024, of which a significant portion relates to bodily injury claims arising from road accidents - including both fault claims within comprehensive policies and third-party injury claims processed under the Civil Liability Act 2018 whiplash reforms. Understanding the scale and nature of road accidents is directly relevant to why UK car insurance costs what it does. For premium context, see our average car insurance cost guide. For the full market overview, visit the car insurance hub. 2024 road accident statistics - the headline data
Long-term KSI trend (2000-2024)The UK has one of the lower road fatality rates per billion vehicle miles in Europe, reflecting decades of road safety investment. The DfT's long-term data series shows:
Casualty breakdown by road user and ageThe DfT RSGB report breaks down KSI figures by road user type and age. These breakdowns are directly used by motor insurers in actuarial pricing. Consistent patterns across DfT data series show:
What this means for UK driversThe 27,334 KSI figure for 2024 represents the exposure pool that generates the bodily injury claims processed by UK motor insurers. The Civil Liability Act 2018 and its associated whiplash reforms (implemented in May 2021) restructured how low-value personal injury claims from road accidents are handled, introducing a fixed tariff for whiplash injuries of up to two years and a new Official Injury Claim portal administered by the Ministry of Justice. The ABI argued that these reforms would reduce motor claims costs; the extent to which savings have fed through to premiums has been a matter of ongoing FCA scrutiny. The overrepresentation of young drivers (17-24) in KSI data is the statistical foundation for the ABI's documented age-band premium differential. This is not insurer discretion - it is actuarially justified by the DfT's own collision data, which shows young drivers are involved in serious accidents at a rate disproportionate to their share of total licensed drivers or vehicle miles driven. The FCA's pricing rules permit the use of actuarially justified rating factors including age. For young drivers seeking to reduce premium costs despite the statistical risk profile, see our guide on cheap car insurance UK 2026. For the full claims process after an accident, see how to claim car insurance after an accident. For drink-driving's role in accident statistics, see our drink driving statistics UK 2026 article. Methodology - how we sourced this data
We refresh this article when the DfT publishes its next annual Road Casualties Great Britain report. Frequently Asked QuestionsHow many road accidents happen in the UK each year?The DfT's Road Casualties Great Britain 2024 report records 104,258 reported road collisions involving personal injury in Great Britain. This figure covers only police-reported accidents (STATS19 data); the actual number of road incidents including those not reported to police is estimated by the DfT to be considerably higher. The 104,258 reported collisions resulted in 1,695 deaths and 27,334 killed or seriously injured (KSI). What does KSI mean in road accident statistics?KSI stands for Killed or Seriously Injured - a composite measure used by the DfT and road safety bodies to track the severity of road casualties. A serious injury is defined in STATS19 reporting as one requiring hospital admission. KSI is the primary headline measure in the DfT's Road Casualties Great Britain report and is used as the benchmark for the UK government's road safety targets. The 2024 KSI total was 27,334. Why are young drivers overrepresented in accident statistics?DfT data consistently shows that drivers aged 17-24 are involved in serious collisions at a rate significantly above their proportional share of licensed drivers or vehicle miles driven. Factors cited in DfT research include lower hazard perception skills, higher risk tolerance, less experience of adverse conditions, and night-driving exposure. This statistical overrepresentation directly justifies the actuarial age-based premium differential documented by the ABI, where 17-20 year-olds average £1,539 per year versus £393 for 50-65 year-olds. Do road accident statistics affect car insurance premiums?Yes. Road accident data - specifically the DfT's STATS19 dataset and associated KSI and slight injury breakdowns - is a primary input into insurer actuarial models. The frequency and severity of claims paid by insurers (documented by the ABI's £11.1bn total claims figure for 2024) is directly linked to the volume and severity of road accidents. Insurer pricing models translate accident frequency data into expected loss ratios by driver profile, postcode and vehicle type, which then determine the premium charged.
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UK Road Accidents Statistics 2026: DfT KSI Data Analysis
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