A list of visitors entertained by the Prime Minister was released by the Government, but it included only those guests who had received official hospitality.
Shadow Cabinet Office minister Michael Dugher wrote to the PM demanding full disclosure of visitors to Chequers and Downing Street.
The list released by Number 10 included senior politicians from both coalition parties, Afghan president Hamid Karzai and Arts Council England chief Sir Peter Bazalgette, the former boss of Big Brother producers Endemol.
But Mr Dugher said there were "glaring omissions" from the list because of the failure to disclose guests paid for by the Tories.
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