Shamima Begum should be allowed to return to the UK to fight the decision to remove her British citizenship, the Court of Appeal has ruled.
Ms Begum, now 20, was one of three schoolgirls who left London to join the Islamic State group in Syria in 2015.
Her citizenship was revoked by the Home Office on security grounds after she was found in a refugee camp in 2019.
The Court of Appeal said she had been denied a fair hearing because she could not make her case from the Syrian camp.
The Home Office said the decision was “very disappointing” and it would “apply for permission to appeal”.