Statistics on the number of stop-searches conducted under Section 44 of the Terrorism Act 2000 are published in two reports on a yearly basis. The Ministry of Justice publications Report Statistics on Race and the Criminal Justice, 2006 and the Statistical Bulletin: Arrests for Recorded Crime (Notifiable Offences) and the Operation of Certain Police Powers under PACE, 2005-06 (both the latest available) contain statistics on the number of stops and searches under the Terrorism Act and resultant arrests. The latest version of these publications can be located at:
http://www.justice.gov.uk/publications/arrestsfornotibleoffences.htm
(Table P3, page 27)
http://www.justice.gov.uk/publications/raceandcjs.htm
(Table 4.6, page 34)
Publications for previous years can be located at the Home Office Statistical Bulletins Archive located here:
http://www.homeoffice.gov.uk/rds/pubsstatistical.html
http://www.homeoffice.gov.uk/rds/hosbarchive.html