Statistics on the number of people awaiting trial are available on the Home Office website:
http://www.homeoffice.gov.uk/security/terrorism-and-the-law/
The information is not broken down in the manner requested. Since 11 September 2001 to 31 March 2007, there have been 1,228 arrests under the Terrorism Act 2000 and under other legislation, where the investigation was conducted as a terrorist investigation. Of those arrested, 132 were charged with terrorism legislation offences only, 109 were charged with terrorism legislation offences and other criminal offences and 195 were charged under other legislation including murder, grievous bodily harm, firearms, explosives offences, fraud, false documents Of those charged 114 were awaiting trial on 31 March 2007. Statistics are compiled from police records and are subject to change as cases go through the system.