I told the BBC's Daily Politics show <a href="http://www.bbc.co.uk/news/uk-politics-24160853">in 2013</a> that I'd "run naked down Whitehall" if the Lib Dems were reduced to just 24 MPs at the next election. 

Technically, that didn't happen. We did far, far worse. But a pledge is a pledge, as Lib Dems know only too well. 

Plus former Sun editor Kelvin McKenzie has <a href="http://www.telegraph.co.uk/news/politics/liberaldemocrats/11879817/Lib-Dem-activist-offered-5000-to-run-naked-down-Whitehall.html">offered me £5,000</a> for the charity of my choice to see it through. 

My charity of choice is Médecins Sans Frontières (Doctors without Borders). MSF deliver medical aid to the people who need it most, no matter where they are or whether they have hit the headlines. MSF UK takes no money from government; 99.9 percent of its funds come from private donors, like you and me - and Kelvin.

Full disclosure: I'll be substantially naked but don't expect a Full Monty.

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