A joint Computer Weekly/Channel 4 News investigation of problems with the £12.4bn NHS IT programme was broadcast last week.
Anchorman Jon Snow told viewers, "Hundreds of appointments for patients have gone astray because of system failures at two different hospitals."
The special report detailed the errors that meant a leading children's hospital in Oxford went ahead with a system that had already caused problems at a London NHS trust.
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View the Computer Weekly/Channel 4 report
Why healthcare IT needs regulation