London NHS hospital trust hit by cyber-attack

Barts health NHS trust warns staff and takes 'a number of drives offline' as it urgently investigates phishing ambush

The largest NHS trust in England has been hit by a cyber-attack that could affect thousands of files across at least four London hospitals.

Barts health trust, which runs five hospitals in east London - the Royal London, St Bartholomew's, Whipps Cross, Mile End and Newham - has sent a message to staff urging them not to open email attachments from unknown senders.