Photo: Roger Cornfoot · CC BY-SA 2.0Crime recorded in Ynysddu, and why it isn’t graded
Year on year, 30.7 violent and sexual offences and 13.9 incidents of burglary, vehicle crime and damage occur per 1,000 residents. There is no Safety Grade for Ynysddu, but the crimes police recorded inside its built-up area from September 2023 to August 2026 are here. Below 1,000 residents, a handful of incidents moves the rate a long way, so Ynysddu, with fewer, has no Safety Grade.
Crimes and reports per 1,000 residents (Census 2021) a year, September 2023 to August 2026.
What police recorded in the last 12 months
Against the typical town its size, Ynysddu runs highest on public order (19.3 per 1,000 against 2.4), anti-social behaviour (38.5 per 1,000 against 5.3) and criminal damage & arson (18.2 per 1,000 against 3.2).
Show as a table
| Category | In the grade | Reports | Per 1,000 | Typical |
|---|---|---|---|---|
| Anti-social behaviour | not graded | 38 | 38.5 | 5.3 |
| Violence & sexual offences | Violent | 33 | 33.4 | 16.6 |
| Public order | not graded | 19 | 19.3 | 2.4 |
| Criminal damage & arson | Home & vehicle | 18 | 18.2 | 3.2 |
| Vehicle crime | Home & vehicle | 4 | 4.1 | 1.5 |
| Other crime | not graded | 2 | 2 | 1.1 |
| Other theft | not graded | 1 | 1 | 2.5 |
| Drugs | not graded | 1 | 1 | 0.6 |
| Robbery | Violent | 1 | 1 | 0 |
| Shoplifting | not graded | 0 | 0 | 0 |
| Burglary | Home & vehicle | 0 | 0 | 1.6 |
| Bicycle theft | not graded | 0 | 0 | 0 |
| Possession of weapons | Violent | 0 | 0 | 0 |
| Theft from the person | not graded | 0 | 0 | 0 |
“Violent” is police.uk’s violence and sexual offences (which includes harassment, stalking and assault without injury), robbery and possession of weapons. Anti-social behaviour isn’t a crime category; shoplifting and other theft happen mostly in shops and town centres rather than to residents, so neither counts in the grade.
September 2025 to August 2026, per 1,000 residents. The tick on each bar is the typical (median) town among UK towns of 1,000 to 2,500 people.
Crime in Ynysddu per 1,000 residents
A crime isn’t a victim: one person can report several, and crimes in a town centre often involve visitors rather than residents.
And about 22 burglaries, vehicle crimes or acts of criminal damage, plus 1 shoplifting and theft report, in the 12 months to August 2026. Each dot is one resident; each coloured dot is one recorded crime.
34 violent and sexual offences in the last 12 months, against 25 the year before
“Towns its size” pools all UK towns of 1,000 to 2,500 people that police.uk covers each month (Greater Manchester has no data).
Rolling twelve-month rate, per 1,000 residents a year (longer windows for smaller places, where a few crimes swing a month). In the 12 months to August 2026 against the 12 before: violent +36% (towns its size +3%), anti-social behaviour -21% (towns its size -1%).
Crime in the places around Ynysddu
| Town | People | Violent | Homes & vehicles | Safety |
|---|---|---|---|---|
| Ynysddu | 987 | 30.7 | 13.9 | — |
| Cwmfelinfach | 1,353 | 30.8 | 16 | C |
| Maesycwmmer | 2,095 | 28.8 | 13.2 | C |
| Pontllanfraith | 9,363 | 31.7 | 15.2 | C |
| Llanbradach | 3,766 | 32.7 | 14.7 | C− |
| Bedwas | 6,463 | 39.4 | 14.8 | C− |
| Trethomas | 1,713 | 58 | 19.5 | D− |
| Ystrad Mynach | 11,856 | 44.1 | 18.1 | D |
Ynysddu records more graded crime per resident than 1 of its 7 neighbours. Maesycwmmer, 2 miles away, records 28.8 violent and sexual offences per 1,000 residents a year (3-year average), against Ynysddu’s 30.7.
Per 1,000 residents a year, the same three years. Tap a town for its safety page.
What this data can and can’t tell you
- Where crimes happen, not where victims live. police.uk places each crime at a point near where it happened. Town centres with shops, stations, a hospital and nightlife record more crime per resident, and residents of nearby villages who come in to shop or go out are part of that count.
- Bigger towns record more per resident. Across UK towns, recorded crime per resident rises steeply with size, more than in the U.S., so a city’s grade sits low against the whole UK. The “towns its size” figures show where Ynysddu sits among towns like it; they are context and don’t change the grade.
- Points are approximate. police.uk moves each point to the nearest of a set of anonymous map points, so crimes near the edge of the built-up area can fall either side of it.
Questions about safety in Ynysddu
Is Ynysddu safe?
Police recorded 30.7 violent and sexual offences and 13.9 burglaries, vehicle crimes and acts of criminal damage per 1,000 residents a year over the three years to August 2026 (police.uk, inside Ynysddu’s built-up area).
Is crime going up in Ynysddu?
Police recorded 34 violent and sexual offences in the 12 months to August 2026, against 25 in the 12 months before. With numbers this small, a few crimes change the rate a lot.
What is the most common crime in Ynysddu?
Violence & sexual offences: 33 in the 12 months to August 2026, which in police.uk includes harassment, stalking and assault without injury. Next came public order (19) and criminal damage & arson (18), with 38 reports of anti-social behaviour.
How does Ynysddu compare with Caerphilly?
Caerphilly records 42.1 violent and sexual offences and 18.6 crimes against homes and vehicles per 1,000 residents a year, against Ynysddu’s 30.7 and 13.9, over the same three years.
Sources: data.police.uk street-level crime, 36 months to August 2026, points inside the built-up-area boundary · ONS Census 2021, output areas summed to the ONS 2022 built-up area · Welsh Government Welsh Index of Multiple Deprivation 2025, community safety domain by LSOA · TownRatings grades: our own summary of the data, ranked against UK towns only. All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.