Knife crime

Buying or carrying knife illegally is a knife crime. Recently selling and buying knives have been restricted . People who wants to buy knife should consider whether it is legal or not .  In fact knife crime can be defined as any crime that involves a knife. Threatening people with knife could be  one types of knife crime. Besides, someone who is under 18 shouldn't carry or buy knife since it could be crime. Moreover, robbery or burglary where the thives carry a knife as a weapon is the other type of knife crime. 

References:http://www.direct.gov.uk/en/CrimeJusticeAndTheLaw/Typesofcrime/DG_181675