A committee of MPs says the taxpayer missed out on an extra £1 billion when Royal Mail was privatised last year.
The Commons business select committee says shares were undervalued, but Business Secretary Vince Cable dismissed the findings as "hindsight".
ITV News Political Correspondent Libby Wiener reports.
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Mr Osborne said he is "not the person to provide the unity my party needs".
Actress Lena Dunham has criticised Kanye West's "disturbing" new music video for depicting a host of naked celebrities in bed together.
David Cameron is to meet leaders of other EU states for the first time since the referendum vote for Brexit.