Last month the Metropolitan Police released data on the number of homicides between 2003 and 2013 under the Freedom of Information Act.
The data also reveals the number of homicides classed as ‘detected’ and ‘undetected’.
Sanction Detections refer to ‘police generated detections’ where the accused receives a punishment or sanction (charge, caution, summons) from the police.
Non-Sanction detections (Other) are used for cases resolved through administrative means, such as when the accused dies or the CPS decide not to prosecute.
The percentage of undetected homicides during this period range between six per cent (2009 and 2011) to 14 per cent (2007).
| Year | Offences | Sanction | Other | Undetected |
| 2003 | 216 | 181 | 9 | 26 |
| 2004 | 188 | 171 | 3 | 14 |
| 2005 | 181 | 143 | 20 | 18 |
| 2006 | 172 | 147 | 3 | 22 |
| 2007 | 163 | 134 | 6 | 23 |
| 2008 | 155 | 140 | 1 | 14 |
| 2009 | 130 | 120 | 2 | 8 |
| 2010 | 125 | 111 | 1 | 13 |
| 2011 | 118 | 109 | 2 | 7 |
| 2012 | 106 | 94 | 2 | 10 |
| 2013 | 108 | 89 | 4 | 15 |
Other Freedom of Information releases include:
The number of homophobic and transgender hate homicides between financial years 2007/8 and 2012/13 (four homophobic and one transgender hate)
The nationalities of murder victims in 2013 (28 UK Nationals, 29 Overseas Nationals, 37 not recorded).