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Last Updated: Wednesday, 27 February 2008, 13:19 GMT
Parliament's previous protests
Anti-Heathrow expansion campaigners are the latest group to target the Houses of Parliament. Here are some of past protests.


July 1970: CS gas canisters thrown into the Commons debating chamber from the public gallery


July 1978: Manure thrown from the public gallery during a Scottish devolution debate.


February 1988: Three lesbian demonstrators abseil into the Lords during a debate on Section 28 - which banned the "promotion" of homosexuality in schools.


June 1996: A group of demonstrators throw leaflets into the Commons chamber


December 1996: A pair of young women in the Strangers' Gallery unfurl a banner protesting against arms sales to Indonesia before being bundled out by attendants


February 2004: Anti-war campaigners heckled the prime minister during a debate on Iraq


Brothers Harry and Simon Westaway
The men cleared a wall and security fence before climbing the tower
March 2004: Two Greenpeace demonstrators climb Big Ben in a protest against the Iraq war. Harry Westaway and his brother Simon scaled the landmark on the first anniversary of the invasion on 20 March. They said at the time that beating the defence around Parliament was "easy" - which prompted a security review. They cleared a wall and security fence before climbing the 315ft tower. They were arrested on suspicion of causing criminal damage but were not prosecuted.


Flour thrown at Tony Blair in the House of Commons
Dyed flour was thrown at Tony Blair in the House of Commons
May 2004: During prime minister's questions Tony Blair was hit by a condom filled with purple flour thrown by campaigners from the pressure group Fathers 4 Justice, weeks after a 600,000 new security screen had been installed in the chamber. Two men, Ron Davis and Guy Harrison had got in using tickets won at a charity auction. Mr Davis was convicted of disorderly behaviour and given a conditional discharge and fine, Mr Harrison was fined 600. It prompted a wide-ranging security review, led by MI5.


Protesters in the Commons
Protesters entered the chamber where MPs were debating the bill
September 2004: Parliament has to be suspended after five protesters get into the Commons chamber while MPs debate whether to ban hunting with dogs. The men got in dressed in boiler suits and posing as builders, before discarding their suits to reveal foxhunting protest T-shirts, while thousands of people protested outside. When the Commons resumed business, MPs voted to back the ban. Protester Otis Ferry, son of musician Bryan Ferry, was among eight men convicted of violating the Public Order Act over the protest and received 18-month conditional discharges.


Greenpeace banner outside the Palace of Westminster
Greenpeace hoped to persuade MPs not to back a renewal of Trident
March 2007: Four Greenpeace campaigners scale a crane beside the Houses of Parliament in protest at the government's plans to update its Trident nuclear weapons system. They went on to unfurl a 50ft banner reading "Tony heart WMD" ahead of a Commons vote on the issue. MPs eventually voted to back the plans, despite the biggest revolt by Labour MPs since Iraq. The company which had been using the crane to carry out repair work on Westminster Bridge described the protest as a "real pain".


Anti-Heathrow expansion protest at the Commons 27 February 2008
The protesters say they got up via a fire escape
February 2008: Six protesters against the expansion of Heathrow Airport climb on to the roof of the Houses of Parliament, unfurling banners and throwing paper planes. They say they got up there by way of a fire escape, but police said there was a strong possibility they were guests of security pass holders.

Protesters scale Parliament roof
27 Feb 08 |  UK Politics
Blair hit during Commons protest
19 May 04 |  UK Politics
Pro-hunt protesters storm Commons
15 Sep 04 |  UK Politics

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