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He used his keynote speech in Birmingham to tell delegates: "Labour has taken our most treasured national institution, ripped out its soul and replaced it with targets, directives, management consultants and computers."
The attack came in a section of his speech which blamed bureaucracy for leaving health service staff "terribly, terribly let down".
The Tories published their NHS Improvement Plan this week, which pledges to end "Labour's centrally determined and unresponsive national IT system".
The government has already made it possible for Trusts to opt out of certain sections of the NHS National Programme for IT, particularly those areas hit by technology delays.