The Keogh report into failures in NHS care in countries across the country has ignited a fierce debate between the government and Labour.
The Health Secretary Jeremy Hunt says it amounted to "Labour's darkest moment", but his predecessor Andy Burnham accused the Government of "playing politics with people's lives", as Political Correspondent Libby Wiener reports.
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The man, in his thirties, was found with stab injuries on the upper deck of a bus in Handsworth, Birmingham, on Monday night.
Thousands of passengers now face delays, with Southeastern trains warning "all services" would be affected.
Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.