(BBC) A financial analyst stored chemicals and electric circuitry that could be used to build explosive devices, a jury at the Old Bailey was told.
Asad Bhatti also worked on a computer handbook that included the subject “Jihad and Martyrdom,” the court heard.
Bhatti, 48, from Redhill, denies making and possessing explosives for terrorist purposes.
A computer shop owner contacted police about the contents of Mr Bhatti’s laptop he was given to repair.
Prosecutor Karen Robinson said an analysis of Mr Bhatti’s laptop revealed “a significant library of materials which detailed, with precision, how to manufacture explosive devices.”