Total Crime Rate
10.1 per 1,000
All offences · Oct 2024 - Sep 2025William Street area has the lowest crime rate of 27 local areas in Brynna and Llanharan , and the 38th lowest crime rate of 797 local areas in Rhondda Cynon Taf .
Neighbouring streets tend to have noticeably higher crime levels than this postcode. Crime here is lower than the average for the surrounding output areas.
The overall crime rate in the area around William Street (CF72 9QJ) in the last 12 months was 10.1 per 1,000 residents and was 88.3% lower than the Brynna and Llanharan average (86.6 per 1,000 residents). In the last 12 months, this area’s most reported crimes were Anti-social behaviour with 1 offences recorded. The least common crime was Anti-social behaviour with 1 case , up 100.0% compared to 2024. The fastest-growing crime category was Anti-social behaviour ( 100.0% YoY). The sharpest decline was Violence and sexual offences ( -75.0% YoY).
Violent crimes totalled 1 (≈ 3.4 per 1,000 residents). Year-over-year these were falling ( -83.3% ). Over the last decade, overall crime has falling ( -55.9% comparing early vs recent averages) .
In the area around William Street (CF72 9QJ), the highest concentration of overall crime is near Church Street, where police recorded 5 incidents. Violent and public-order offences occur most often near Heol Dewi (4 offences). Both locations lie within roughly 0.3 miles of this postcode area.
View Crime In Brynna and Llanharan| Month | Crime | Location* | Last Outcome |
|---|---|---|---|
| Sep 2025 | Violence and sexual offences | Mostyn Close | Under investigation |
| Sep 2025 | Anti-social behaviour | Brynna Road | — |
| Sep 2025 | Violence and sexual offences | Church View | Under investigation |
| Sep 2025 | Anti-social behaviour | Southall Street | — |
| Sep 2025 | Criminal damage and arson | Williams Street | Investigation complete; no suspect identified |
| Sep 2025 | Violence and sexual offences | Mostyn Mews | 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.