S21 postcode district road traffic accidents
The S21 postcode district recorded 706 collisions in the STATS19 data between 1999 and 2025, involving 987 casualties. Of these collisions, 10 were fatal and 114 were serious. Recorded collisions in 2025 were down 43% on 2024.
Severity Breakdown
- Fatal
- 10
- Serious
- 114
- Casualties
- 987
- Fatal
- 10
- Serious
- 114
- Casualties
- 987
Collisions by Year
Areas covering S21
Towns in S21
Roads in S21
Planning applications nearby
Data from PlanIndex, an index of UK planning registers.
Data from PlanIndex, an index of UK planning registers.
Accidents in the S21 postcode district
Road collision statistics for the S21 postcode district
Collisions recorded
706
Police-reported road traffic collisions captured in the STATS19 data.
People injured or killed
987
Casualties recorded across every collision in this area.
Fatal collisions
10
Collisions in which at least one person died.
Serious collisions
114
17.6% of collisions here ended in a death or serious injury.
Severity of collisions
What the data shows in the S21 postcode district
Collisions in the S21 postcode district are most frequently recorded on a Friday (17.1% of the total), with 28.3% happening in darkness rather than daylight. The most common posted speed limit at the scene is 30 mph.
94.5% of recorded collisions in the S21 postcode district happen on a single carriageway. Around 25.1% were recorded in adverse weather such as rain, snow or fog.
The collisions in the S21 postcode district have produced 987 casualties. Pedestrians account for 11.3% 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 100 collisions, Monday 95 collisions, Tuesday 82 collisions, Wednesday 107 collisions, Thursday 104 collisions, Friday 121 collisions, Saturday 97 collisions.
Light conditions
Light conditions: Daylight 506 collisions, Darkness 200 collisions.
Road type
Road type: Single carriageway 667 collisions, Dual carriageway 22 collisions, Roundabout 13 collisions, One way street/Slip road 2 collisions, One way street 1 collisions, Unknown 1 collisions.
Speed limit at the scene
Speed limit at the scene: 20 mph 2 collisions, 30 mph 496 collisions, 40 mph 43 collisions, 50 mph 48 collisions, 60 mph 108 collisions, 70 mph 9 collisions.
Weather at the time
Weather at the time: Fine no high winds 529 collisions, Raining no high winds 91 collisions, Unknown 49 collisions, Other 16 collisions, Raining + high winds 8 collisions.
Who was hurt
Who was hurt: Driver or rider 624 casualties, Passenger 251 casualties, Pedestrian 112 casualties.
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Recent Accidents
Showing 2 of 582 accidents
Accident 1999309C00059
SlightAccident 1999309C00048
SlightFrequently asked questions about road accidents in the S21 postcode district
How many road accidents have there been in the S21 postcode district?
706 collisions have been recorded in the S21 postcode district in the STATS19 road safety data between 1999 and 2025, involving 987 casualties.
How many of the collisions in the S21 postcode district were serious or fatal?
10 were fatal and 114 were serious — 17.6% of all recorded collisions in the S21 postcode district resulted in a death or serious injury.
When do most road accidents happen in the S21 postcode district?
Friday is the most common day for collisions in the S21 postcode district, accounting for 17.1% of them, and 28.3% of all collisions here happen in darkness.
What kind of roads do collisions in the S21 postcode district happen on?
94.5% of collisions in the S21 postcode district are recorded on a single carriageway, most often where the limit is 30 mph.
Are pedestrians often hurt in collisions in the S21 postcode district?
Pedestrians make up 11.3% of the 987 casualties recorded in the S21 postcode district.
Is road safety in the S21 postcode district getting better or worse?
Recorded collisions in the S21 postcode district fell 43% 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 S21 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 S21 postcode district cover 1999 to 2025.