Look a little closer
If a good look is taken at the breakdown of crimes at Stansted it may be seen that a lot of the reported crime outcome is offensive weapons, most of which are recovered lock & flick knives plus Mace and other self defence items whilst legal in most of the EU are not in the UK, which are found at security bag and body searches. The other high incidences are shoplifters, because airport shops are easy targets and drunk and disorderly, all to often arriving this way (it costs too much to get pi55ed at the airport)