A woman arrested in Birmingham on suspicion of terrorism offences has been charged, police said.
Madihah Taheer, 21, has been charged with assisting another to commit acts of terrorism by providing her bank details to purchase a knife.
Mrs Taheer, from St Agathas Road in the city, is due before Westminster Magistrates' Court on Tuesday.
Her husband, Ummariyat Mirza and his sister, Zainub Mirza, have also been charged.
Mr Mirza, 21, of St Agathas Road, is charged with preparing for a terrorist attack in the UK by buying a knife and other items.
The 23-year-old sister, from Eastfield Road, Bordesley Green, is charged with sending Islamic State propaganda videos to others.
They have both been remanded to next appear before the Old Bailey on 28 April.
West Midlands Police said the charges were not linked to the Westminster attack.