Michael Gove has told BBC 1's Andrew Marr Show: "I think it's wrong to claim that this government if favouring one group of individuals over another in public appointments."
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Kevin Davis, 53, ran a medical company and helped to treat a 15-year-old who had taken a drugs overdose despite not having qualifications.
CCTV shows the 19-year-old victim being struck by a car and thrown metres into the air, before he lands on the pavement and slides along it.
Police are investigating a fresh allegation against John Worboys alleged to have taken place in 1997, ITV News understands.