Colnbrook is middling for safety, a notch below the Slough average. Crime runs slightly above the borough's rate. Cars and property take more of the hits than they do nationally. Anti-social behaviour is lighter than the national pattern. It is an ordinary place to live, provided the car is locked and parked somewhere sensible.
Police records for Colnbrook's neighbourhoods show 788 crimes in the year from June 2025 to May 2026, a published rate of about 120 per 1,000 people. That puts it about 11% above the average for the Slough council area over the same twelve months.
Across Slough as a whole, the published rate for that year was about 108 crimes per 1,000 people, so Colnbrook's 120 sits a little above the borough's. Both are relative measures within one authority, and neither describes a single street.
The neighbourhood texture helps explain what kind of place this is. Colnbrook averages about 2,310 people per square kilometre, unemployment was about 5% at the 2021 census, and 13% of homes counted as overcrowded. None of those causes crime by itself. Together they describe a busy, mixed working village squeezed between Slough's eastern edge and the motorways.
The breakdown of what gets reported is more useful than the headline. Violence and sexual offences make up 39% of local crime against 35% nationally, close to the norm for a category that covers everything from serious assault to common assault without injury. Criminal damage and arson are 11% here against 7% nationally, and vehicle crime 9% against 5%. Other theft is 8% against 7%, and public order 8% against 7%, both near the national share. Anti-social behaviour runs at 10% against 16% nationally. Vehicle crime is the category to plan around, so ask whether a house comes with off-street parking or a garage, and whether the car would actually fit in it.
Charging decisions are made across the whole force, and Thames Valley Police charged a suspect in about 9% of cases in the year to May 2026, against about 12% nationally. That puts it 37th of 42 forces in England and Wales. In 37% of its cases nobody was identified at all. None of that measures how safe Colnbrook is; it measures what happens after a report is filed, and here a report tends to end up as a crime reference number for the insurer.
Colnbrook's safety is ordinary, slightly behind the borough on paper and harder on cars and property than on people.