Education Secretary Michael Gove has insisted that the government is "perfectly happy to appoint people whatever their political background to important jobs".
Speaking of the outgoing chair of Ofsted Baroness Morgan, who has accused No 10 of trying to fill public bodies with Tory supporters, Mr Gove said "she's done a really good job".
But he told BBC 1's Andrew Marr Show that he felt it was necessary to replace her "in order to bring new eyes to bear".
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Nigel Farage warned on Friday Britain was "far less safe" and exposed to Cologne-style sex attacks because of open-door immigration.
Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.