Disruption from cyber-attack to last for days, says NHS Digital – as it happened

• Cyber-attack that hit NHS sparks political battle over health spending
• Criminals behind cyber-attack have raised just $20,000, experts say
• 'Accidental hero' finds kill switch to halt spread of bug
• Charles Arthur: 'Insufficient NHS funding to blame'

5.55pm BST

We're wrapping up our live coverage of the ransomware cyber-attack and leave you with a summary of today's main developments:

5.35pm BST

The British Medical Association says the cyber attack has forced some doctors to "resort to pen and paper" rather than update patient records digitally.