The government was still refusing to come clean yesterday about how much taxpayer’s cash has been frittered by David Cameron on wining and dining his political pals.

A Freedom of Information request (FoI) about the PM’s spending by the Press Association was blocked on the same day that Civil Liberties Minister Simon Hughes boasted of “extending the reach” of FoI powers to more than 100 new orgainsations.

A list of people hosted at Chequers, the PM’s grace-and-favour country retreat, is published quarterly.

And according to the latest list covering January to March supermodel Claudia Schiffer was among a number of celebrities and political power players to have partied at the Buckinghamshire pile.

Other noteable figures included Spectator magazine editor Fraser Nelson and Marks and Spencer CEO Marc Bolland.

But the Cabinet Office is refusing to say how much public cash Mr Cameron has splurged on his guests.

The department claimed it did not not keep material “in a way that readily facilitate extraction.”

The Cabinet Office said as a result of the “centralised system” for entertainment costs it would only be able to consider providing information covering “weeks” rather than months or years.

The Information Commissioner has rebuked the department, which had originally indicated it would release the figures, for mishandling the request.

The department only started publishing a list of Chequer’s guests after coming under pressure from Labour to reveal Mr Cameron’s secret suitors.

Labour had published a global figure for spending on official entertainment at Downing Street and Chequers, but that policy was dropped when the Tories took power.