Tory leadership race

Iain Duncan Smith total donations - �111,007 Biggest donation - �20,000 Michael Portillo - 28 donors in excess of �1000 Ken Clarke - 20 donations of �1,000 or more ranging up to �25,000 David Davis - six donations over �1,000

Mr Mandelson had previously resigned as trade secretary after it emerged he had an undeclared home loan from the then paymaster general Geoffrey Robinson.

The Hartlepool MP's other interests include his column in GQ magazine for which he is paid between �10,001-�15,000.

The register also shows that Mr Mandelson is a popular choice on the lecture circuit.

Workout

His talks have brought him fees from the Retail 100 Club, UBS Warburg and Weber Shandwick Worldwide.

Breaks in his demanding schedule may see the MP keeping in trim at the Third Space Gym for which he has been given free membership - said to be worth around �1,080.

The register also reveals that Iain Duncan Smith's successful campaign to become leader of the Conservatives had donations in excess of �111,000.

Mr Hague was given several flights by Lord Ashcroft

The limit on the campaign, overseen by the Tory 1922 committee, was actually �100,000 although a Conservative spokesman stressed that the campaign had spent below the allowed threshold.

Hair products manufacturer John Frieda was Mr Duncan Smith's biggest donor with a gift of �20,000.

The Tory leader also received a gift of �5235.50 from the new party treasurer Sir Stanley Kalms.

Mr Duncan Smith's rivals in the leadership contest also list their campaign expenditure with Michael Portillo also showing a donation from Sir Stanley of �5,000.

Sir Stanley's predecessor as Tory treasurer, Lord Ashcroft, provided both former leader William Hague and Mr Duncan Smith with a series of flights.

Tory cabinet office spokesman Tim Collins' entry has a hint of triumphalism about it.

It reads that he received �250 from Liberal Democrat peer Lord Razzall "in settlement of a bet on the outcome of the general election in my constituency".

Lib Dem MP John Thurso's extensive entry in the register includes a donation of 25% of his election expenses from Lord Kirkham.

Lord Kirkham's name also cropped up in Mr Hague's entry as the man who lent him a helicopter on several occasions.

Generous Speaker

Asked to explain this bi-partisan generosity on the part of Lord Kirkham, Mr Thurso told the Guardian: "He is a very old friend. He told me he didn't believe in anything I stood for but gave me the money just the same."

Not all MPs keep the profits of their investments to themselves.

Commons Speaker Michael Martin donates the rental income from a flat, less the money for the mortgage, to the homeless.

And Labour's Fraser Kemp donated his fees for broadcasting to Wearside Women in Need - a charity for the victims of domestic violence.