NN1 postcode district road traffic accidents
The NN1 postcode district recorded 3,544 collisions in the STATS19 data between 1999 and 2025, involving 4,334 casualties. Of these collisions, 30 were fatal and 516 were serious. Recorded collisions in 2025 were down 18% on 2024.
Severity Breakdown
- Fatal
- 30
- Serious
- 516
- Casualties
- 4,334
- Fatal
- 30
- Serious
- 516
- Casualties
- 4,334
Collisions by Year
Areas covering NN1
Towns in NN1
Roads in NN1
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in the NN1 postcode district
Road collision statistics for the NN1 postcode district
Collisions recorded
3,544
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
4,334
Casualties recorded across every collision in this area.
Fatal collisions
30
Collisions in which at least one person died.
Serious collisions
516
15.4% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the NN1 postcode district
Collisions in the NN1 postcode district are most frequently recorded on a Friday (17.4% of the total), with 34.8% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
68.9% of recorded collisions in the NN1 postcode district happen on a single carriageway. Around 17% were recorded in adverse weather such as rain, snow or fog.
The collisions in the NN1 postcode district have produced 4,334 casualties. Pedestrians account for 23.3% of those casualties, a marker of the risk to people on foot here.
Collisions by day of the week
Collisions by day of the week: Sunday 401 collisions, Monday 484 collisions, Tuesday 503 collisions, Wednesday 505 collisions, Thursday 498 collisions, Friday 618 collisions, Saturday 535 collisions.
Light conditions
Light conditions: Daylight 2,310 collisions, Darkness 1,234 collisions.
Road type
Road type: Single carriageway 2,441 collisions, Dual carriageway 576 collisions, One way street 195 collisions, Roundabout 194 collisions, One way street/Slip road 105 collisions, Slip road 26 collisions, Unknown 7 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 126 collisions, 30 mph 3,219 collisions, 40 mph 138 collisions, 50 mph 4 collisions, 60 mph 27 collisions, 70 mph 30 collisions.
Weather at the time
Weather at the time: Fine no high winds 2,923 collisions, Raining no high winds 487 collisions, Other 47 collisions, Unknown 37 collisions, Fine + high winds 17 collisions.
Who was hurt
Who was hurt: Driver or rider 2,345 casualties, Passenger 979 casualties, Pedestrian 1,010 casualties.
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Recent Accidents
Showing 16 of 516 accidents
Accident 199934NN00828
SeriousAccident 199934NN00758
SeriousAccident 199934TN00308
SeriousAccident 199934TN00304
SeriousAccident 199934NN00670
SeriousAccident 199934TN00236
SeriousAccident 199934NN00498
SeriousAccident 199934TN00184
SeriousAccident 199934NN00405
SeriousAccident 199934NN00404
SeriousAccident 199934NN00339
SeriousAccident 199934TN00129
SeriousAccident 199934NN00294
SeriousAccident 199934NN00217
SeriousAccident 199934NN00201
SeriousAccident 199934NN00157
SeriousFrequently asked questions about road accidents in the NN1 postcode district
How many road accidents have there been in the NN1 postcode district?
3,544 collisions have been recorded in the NN1 postcode district in the STATS19 road safety data between 1999 and 2025, involving 4,334 casualties.
How many of the collisions in the NN1 postcode district were serious or fatal?
30 were fatal and 516 were serious — 15.4% of all recorded collisions in the NN1 postcode district resulted in a death or serious injury.
When do most road accidents happen in the NN1 postcode district?
Friday is the most common day for collisions in the NN1 postcode district, accounting for 17.4% of them, and 34.8% of all collisions here happen in darkness.
What kind of roads do collisions in the NN1 postcode district happen on?
68.9% of collisions in the NN1 postcode district are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in the NN1 postcode district?
Pedestrians make up 23.3% of the 4,334 casualties recorded in the NN1 postcode district.
Is road safety in the NN1 postcode district getting better or worse?
Recorded collisions in the NN1 postcode district fell 18% in 2025 compared with 2024, though year-on-year figures move with both genuine risk and changes in reporting.
Where does the road accident data for the NN1 postcode district come from?
It comes from STATS19, the official record of personal-injury road collisions reported to the police and published by the Department for Transport. The figures for the NN1 postcode district cover 1999 to 2025.