Hospitals across England have been hit by a large-scale cyber-attack, the NHS has confirmed. Hackers used ransomware to infect the system before holding files hostage until a ransom is paid. Experts are battling to fix the problem, but computers at walk-in centres, hospitals, and at GP surgeries have been taken offline. Patients have been urged to avoid hospitals 'unless absolutely necessary', and should call 111 for triage and medical advice.
