From the excellent Spy Blog:

You might think that being arrested under the “thought crime” Terrorism Act 2000 section 58 Collection of information, and being held in Belmarsh prison for 9 months, until you face trial, is a bad enough ordeal.

What then, if you are found not guilty on all charges and are released, only to have a Control Order under the Prevention of Terrorism Act 2005 slapped on you instead ?