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View an interactive map documenting Ian Tomlinson’s last moments at the 2009 G20 protests in London, where he collapsed and died shortly after being struck and pushed to the floor by a police officer.

As the Chancellor cuts petrol duty by 1p a litre in the Budget, check out the Channel 4 News map of where in the UK you can buy the cheapest – and the most expensive – petrol.

Chancellor George Osborne delivers a “keep calm and carry on” Budget – with some surprises, including fuel price cuts for the consumer. An expert picks out the key points for Channel 4 News.

It’s Chancellor George Osborne’s first full Budget. But as the Government tries to balance growth with the “age of austerity”, what will it deliver? Channel 4 News speaks to the experts.

Dangerous levels of radiation have leaked into the atmosphere after a third reactor exploded. Channel 4 News speaks to the man in charge of nuclear regulation during the Three Mile Island disaster.

Up to 1,000 people are feared dead following the biggest earthquake to hit Japan since records began. Offers of aid have been coming in from around the world. Channel 4 News speaks to eyewitnesses.

Public sector workers should expect to work longer and receive lower pensions, a report by Lord Hutton suggests – the perfect recipe for industrial action, writes Economics Editor Faisal Islam.

Mexican tycoon Carlos Slim is the richest person in the world for the second year in a row, with Russia and China boosting the ranks of the super-wealthy. Channel 4 News maps the billionaire boom.

David Cameron and Barack Obama are ‘preparing for what might have to be done if Gaddafi goes on brutalising his own people’ as Lindsey Hilsum reports from the frontline.

As oil prices remain high in the face of unrest across the Middle East, a senior oil executive warns Channel 4 News violence in Saudi Arabia would be “as bad as it could be” for the world economy.

Council staff are opting for pay cuts to save their jobs as town halls implement the biggest budget reductions since the Second World War, writes Political Correspondent Cathy Newman.

Libya becomes the first member state to be suspended by the UN Human Rights Council after a day of tension and the prospect of military action and civil war, as our Correspondents in Libya report.

Ban Ki-moon, UN Secretary-General, has said it is “time for concrete action” to deal with the violence in Libya. See latest updates and video in our #c4news live blog.

David Cameron apologises for the delay rescuing Brits stranded in Libya as Channel 4 News learns that the Government only placed a firm order for the charter flight on Wednesday morning.

Thousands are trying to flee Libya amid fears of civil war. Colonel Gaddafi is losing his grip on power and will not be able to hold out for much longer, a Libya expert tells Channel 4 News.