Road
Crashes on the A421
2,918 recorded collisions since 2000.
2,918
All crashes
76
Fatal
366
Serious
2,476
Slight
Since 2000 the A421 has seen 2,918 collisions, 76 of them fatal and 366 serious. That ranks it 135th of 6,754 numbered A, B and M roads by total recorded collisions. Its fatal rate is 26 per 1,000 collisions, and 15% caused death or serious injury. Collisions have fallen by about 56% since 2000, from 177 to 77 in 2024. The heaviest local concentrations are in Milton Keynes, Bedford and Central Bedfordshire.
Worst local authorities on the A421
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Crashes by year
2000–2024200150100500
200020052010201520202024
Figures cover collisions reported to police (STATS19) from 2000 onward. Source: DfT STATS19, Open Government Licence v3.0.