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Thousands are expected to take to the streets of London on Saturday to demand David Cameron resign as Prime Minister.

It follows the Prime Minister's admission that he trousered thousands of pounds in profits from an offshore firm owned by his father.

He and his wife finally admitted to having owned 5,000 shares in Blairmore Holdings, a firm set up Dave's stockbroker dad Ian Cameron.

The fund was set up in Panama to avoid paying UK corporation and capital gains tax.

The protest gained a boost in interest last night, after fugitive whistleblower Edward Snowden retweeted it to his 1.9m followers, urging Brits to rise up against Mr Cameron's leadership.

But where is the protest and what time does it start? Here's everything you need to know.

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Where will the protest take place?

People are expected to gather outside the entrance to Downing Street, on London's Whitehall.

What time does it start?

11am

Where can I get more information?

The protest has a Facebook event, here.

At the time of writing, some 1,700 people are signed up to attend.

How should I dress?

In keeping with the theme of offshore tax havens, organisers have suggested a voluntary dress code.

The Facebook page suggests: "Hawaiian shirts, tropical colours, sunglasses and (of course) Panama hats. If you've got a blow up beach ball then bring that along.

"Why should Tories get to have all the offshore fun?"

Is anyone famous going to be there?

Singer Lily Allen has said she's coming to the protest.

She's been quite vocal in her opposition to the Prime Minister, and disgust at last night's admission.