A man and woman from Berkshire have appeared before magistrates accused of buying bomb-making chemicals.
Mohammed Rehman, 24, from Reading and Sana Ahmed Khan, 23, from Wokingham, were arrested during police raids on 28 May.
Both have been charged with the preparation of acts of terrorism in the UK and have been remanded in custody.
Mohammed Rehman has also been charged with possession of articles for terrorist purposes.
Both are accused of buying chemicals to manufacture explosive devices and of researching and downloading instructions for carrying out a terrorist attack, including a copy of the Al-Qaeda Inspire Magazine containing a guide to making a bomb in your kitchen.
They are also accused of having carried out testing of explosive devices.
They appeared at Westminster Magistrates' Court and will next appear at the Old Bailey on 26 June.
Counter terror officers raided two addresses in the Reading area on 28 May.
Items from the pair's homes were removed for examination.