In 2007-08 there were 736 persons and in 2008-09 there were 772 persons arrested for drug-dealing offences in Northern Ireland.
Conviction data for 2007 and 2008 are not available. In 2005 there were 149 persons and in 2006 there were 159 persons sentenced for drug-dealing offences in Northern Ireland.
Data for arrests relate to the offence for which a person is initially charged while data for convictions relate to the offence for which a person is tried. Not all persons arrested for drug-dealing are tried for this particular offence; for instance, if there is insufficient evidence persons may be tried for a lesser offence, such as drug possession.
Both data for arrests and convictions are collated on the principal offence rule; only the most serious offence with which an offender is charged is included.