Sidcup is middling for safety, a little worse than the rest of its borough and a long way from alarming. Recorded crime runs slightly above the Bexley average. Cars and nuisance behaviour make up more of it than usual. Violence makes up less. Most residents will mainly need to remember to lock the car.
The Metropolitan Police recorded 3,508 crimes in Sidcup in the year from June 2025 to May 2026. That works out to a published rate of about 90 per 1,000 residents, roughly 12% above the London Borough of Bexley average.
Across Bexley as a whole the rate is about 81 crimes per 1,000 residents, so Sidcup is nine or so above its own borough. Over a year, that gap is noticeable on a chart and much less so on the pavement.
On average, Sidcup has about 5,600 residents per square kilometre. Unemployment is about 3% and about 5% of households are overcrowded. That makes Sidcup a busy, built-up suburb with a high street, a station and plenty of parked cars, where most people are working and few are squeezed for room. Busy places generate reports, and that is all the density figure is here.
The mix is more useful than the total. Violence and sexual offences make up 29% of Sidcup's recorded crime, against 35% nationally. That is a smaller share than usual for a category covering everything from serious assault to a shove with no injury. Anti-social behaviour is 20% here and 16% nationally, and vehicle crime 9% against 5%. Criminal damage and arson, at 8% against 7%, and other theft, at 6% against 7%, are roughly the national pattern. Shoplifting, at 7% against 8%, comes in slightly under. Sidcup's extra crime tends to happen to parked cars and in public spaces after closing time, and less of it involves people being hurt. The national police crime map shows reported incidents month by month around any chosen street, so check the road you are viewing on it, especially near the high street or the station.
Charging is a separate question from how often crime happens. The Metropolitan Police charges a suspect in about 10% of cases across London, against about 12% nationally, and in about 53% of its cases nobody is identified at all. Those are force-wide figures covering the whole of London, Sidcup included. For the kind of crime that is over-represented here, a steering lock does more than a crime reference number.
Sidcup is averagely safe, slightly busier on the crime map than the rest of Bexley, and its extra crime mostly targets property and parked cars more than people.