Total Crime Rate
13.4 per 1,000
All offences · Oct 2024 - Sep 2025Clos Alyn area has the 3rd lowest crime rate of 66 local areas in Pontprennau and Old St Mellons , and the 97th lowest crime rate of 1,028 local areas in Cardiff .
This postcode forms a relatively safe pocket compared with the surrounding streets. Neighbouring areas record much higher crime levels, even though this postcode itself remains comparatively low-crime.
The overall crime rate in the area around Clos Alyn (CF23 8LB) in the last 12 months was 13.4 per 1,000 residents and was 83.0% lower than the Pontprennau and Old St Mellons average (78.5 per 1,000 residents). In the last 12 months, this area’s most reported crimes were Violence and sexual offences with 3 offences recorded. The least common crime was Anti-social behaviour with 1 case , unchanged from 2024. All major crime categories fell. The sharpest drop was Violence and sexual offences ( -25.0% YoY).
Violent crimes totalled 3 (≈ 10.0 per 1,000 residents). Year-over-year these were falling ( -25.0% ). Over the last decade, overall crime has falling ( -74.1% comparing early vs recent averages) .
In the area around Clos Alyn (CF23 8LB), the main crime hotspot is near Crawford Drive. Police recorded 12 crimes here, including 8 violent or public-order offences. All these locations are within roughly 0.3 miles.
View Crime In Pontprennau and Old St Mellons| Month | Crime | Location* | Last Outcome |
|---|---|---|---|
| Sep 2025 | Anti-social behaviour | Clos Cwm Creunant | — |
| Sep 2025 | Violence and sexual offences | Clos Alyn | Under investigation |
| Sep 2025 | Public order | Naseby Close | Unable to prosecute suspect |
| Sep 2025 | Violence and sexual offences | Youghal Close | Under investigation |
| Sep 2025 | Criminal damage and arson | Hotham Close | Under investigation |
StreetScan crime figures are based on official UK open data:
Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright and database right.