TL;DR
Crime is one of the first things buyers search for — and one of the easiest to misread. The open data behind almost every "is this area safe?" tool is Police.uk, which publishes street-level crime points for England, Wales and Northern Ireland (Police Scotland does not contribute, so Scottish coverage is absent).
Three things you must hold in your head before you trust a single number:
Used carefully, the data tells you about the *texture* of an area: the mix of offence types, whether the trend is rising or falling, and how a residential street compares to like-for-like streets.
Where the data comes from
Police.uk is the official open-data service run on behalf of the Home Office and the police forces of England, Wales and Northern Ireland. Every month, each force uploads the crimes recorded in its area, released roughly six to eight weeks in arrears. Each record carries an offence category, a month, an anonymised location (a human-readable street name like "On or near Acacia Avenue"), and, where available, an outcome.
Coverage note worth repeating: Police Scotland does not submit to Police.uk. If you are buying in Scotland, this dataset is silent, and you should not infer "low crime" from an empty map — it is an *absent* map.
The crime categories
Knowing the categories matters, because the *mix* tells you far more than the total. Ten burglaries say something very different about a residential street than ten counts of shoplifting.
The combined "violence and sexual offences" category is the most often misread. It bundles a huge range of seriousness into one label, and a large share concentrates around pubs, clubs and transport hubs — which is why a flat above a high street can show a frightening-looking count that has little to do with the safety of the flat itself.
The four ways people read this data wrong
1. Treating recorded crime as actual crime
Police.uk shows crimes reported to and recorded by the police. The Crime Survey for England and Wales (run by the ONS) consistently finds that many offences go unreported. Reporting is also shaped by confidence in the police and insurance requirements. So a higher recorded count can reflect *better reporting*, not more crime.
2. Forgetting the points are snapped, not exact
To protect victims' privacy, Police.uk maps each incident to the nearest anonymised "snap point" — typically the centre of a street or a nearby landmark. The dots do not mean "a crime happened at this exact spot". Zooming to a single house and reading the dots literally is a mistake.
3. Comparing raw counts between areas
Raw monthly counts are driven first by how many people and how much activity an area contains. Before any comparison is meaningful you have to normalise: ideally crimes per head of population (using a denominator like the ONS Census 2021 count), and always like-for-like — residential against residential, not a quiet road against a town-centre postcode. This is the single most common error in DIY crime research.
4. The one-mile-radius trap
Many quick lookups draw a circle — often a one-mile radius of a town centre — and tally everything inside it. If that circle catches a high street or a station, the total is dominated by shoplifting, theft from the person and footfall-driven public-order offences that have nothing to do with a residential street. A home 800 metres from a busy centre can inherit a terrifying number that belongs to the shops. This is exactly why we frame crime the way we do on a postcode area page: the headline is the *category mix* and how the area compares to like-for-like areas, not a raw radius count.
How to actually read it before you buy
Crime is one layer of due diligence
A sensible pre-offer check looks at crime *alongside* the other official datasets: flood risk (Environment Agency), planning (planning.data.gov.uk), schools (Ofsted / GIAS), broadband (Ofcom), road safety (DfT STATS19), environmental factors (UKHSA radon, DEFRA air quality, Historic England), and sold-price history (HM Land Registry Price Paid, England and Wales only). Pulling those together for a single address is what a desk due-diligence report does — ours is a £14.95 one-off with no subscription. Run any postcode from search, see the area context on an area page, or check what's included on the pricing page.
Honest caveats
Used with these limits in mind, Police.uk is genuinely useful — it just rewards the buyer who reads it like an analyst, not like a headline.