David Cameron is under pressure to reveal details of his meetings with Tory donors in the wake of claims that access to the Prime Minister could be secured by making large donations to the Conservative Party.
A Downing Street source said a "handful" of donors had been for dinner with the Prime Minister and his wife, Samantha, in their flat above Number 11.
They included Michael Spencer, a former Tory treasurer, but not Peter Cruddas, who quit from the same role after plunging the Conservatives into a damaging cash-for-access row.
Those invited were old friends of the Prime Minister who just happened to have donated money to the party, the source added.
Labour leader Ed Miliband has demanded full disclosure of which Tory donors had visited Downing Street or Chequers, Mr Cameron's country residence, since May 2010 and what policy representations they had made.
The Tory treasurer and fundraiser, himself a donor, urged reporters posing as wealth fund executives to give more than £250,000 in return for meetings with senior ministers.
He claimed those making such donors, classed as "premier league" could raise issues with ministers and feed their concerns into a Downing Street "policy committee".
Mr Cruddas resigned after his claims were exposed by The Sunday Times and denied that party donors could in fact improperly influence ministers. The matter has been reported to the police.
What happened is completely unacceptable. This is not the way that we raise money in the http://www.itv.com/news/topic/conservative-party/, it shouldn't have happened.
It's quite right that http://www.itv.com/news/topic/peter-cruddas/ has resigned. I will make sure there is a proper party inquiry to make sure this can't happen again."