Reply #9: A "document or record" on bombs, I think

[muriel_volestrangler]

because the BBC page giving what appears to be the precise legal wording of the charges says:

A 17-YEAR-OLD MALE

On a day between 1 October 2005 and 10 August 2006 within the jurisdiction of the Central Criminal Court had in his possession a document or record, namely a book on improvised explosives devices, some suicide notes and wills with the identities of persons prepared to commit acts of terrorism and a map of Afghanistan containing information likely to be useful to a person committing or preparing an act of terrorism (contrary to Section 58 (1) (b) of the Terrorism Act 2000).

http://news.bbc.co.uk/1/hi/uk/5272264.stm

which rather implies he may have had the computer(s) with the 'martyrdom videos', and a guide to making a bomb.