John started as a producer, before becoming a general reporter. His stories included investigating the July 7th bomber Jamal (Germaine) Lindsey, and securing the first pictures of CIA operated aircraft, suspected of conducting 'extraordinary renditions' via UK airports.
During the recession he moved to the Business Unit, where he explored the role of investment banks during the 'credit crunch'.
Malaysians vote in record numbers in an election that could weaken or even end the rule of the world's longest-ruling coalition. Asia Correspondent John Sparks gives his view.
As frustrations between western climbers and Sherpas on Mount Everest boil over, one climber gives his account of what happened to John Sparks.
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Police in Nepal are investigating an alleged fight between two famous European climbers and their Nepalese mountain guides on Mount Everest.
Protests erupt in Bangladesh as the death toll from the collapse of a building supplying western retailers rises above 230. Rescuers fear many more bodies could still be trapped.
Sharks swirled and seagulls swooped - John Sparks reports on the remarkable survival of South African surfer Brett Archibald.
John Sparks speaks with North Korean defectors and activists to get an understanding of the secretive regime and how technology is helping the outside world to seep across the border.
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North Koreans are managing to catch a glimpse of the outside world - from foreign soap operas on television to smuggled films on DVD. John Sparks reports on the first rumblings of change.
US Secretary of State John Kerry raises the stakes in the war of words with North Korea, warning Pyongyang that it knew "what the outcome of the conflict would be" if America had to defend its allies.
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South Korea and its American allies raise their alert levels on expectation that the north is preparing a missile launch in the coming days. John Sparks reports from the border area.
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As tension remains high between Pyongyang and the west, John Sparks speaks to workers returning to South Korea after spending the last week on the northern side of the border.
Talk of all-consuming hell-fire and nuclear war sounds grim. But North Korea's violent sabre-rattling must be viewed in context.
When Burma elected its first democratic president, it was the dawn of a new era. But the country is in a downward spiral of ethnic violence, reports Asia Correspondent John Sparks.
The Pope isn't the only one with more than a billion people on his mind. Xi Jinping was officially endorsed as Chinese president today, but what kind of leader will he be?
How bad is China's air pollution? Asia Correspondent John Sparks meets residents of an apartment block in China's most polluted city, who have found their homes enveloped in black smoke.
Who built a coal-burning power-plant in my back-yard? #c4news goes to Shijiazhuang - China's dirtiest city: http://t.co/SMIeXUZPlo
— c4sparks (@c4sparks) 01 March 2013
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As Beijing residents are told to limit time outside because of pollution, some of the 10 million residents in Shinjiazhuang, China's most polluted city, are starting to fight back.
Life as a teacher in southern Thailand is becoming increasingly perilous. Asia Correspondent John Sparks has spent time with some of the brave women risking their lives.
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Peter Root and Mary Thompson were killed by a pick-up truck. The couple, both 34 years old, had already cycled through the Middle East, Central Asia and China on their round-the-world trip.
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Thailand's south sees its worst violence for years after 16 gunmen are shot dead trying to attack a Thai military base in an area of the country that has experienced violence by Muslim insurgents.
North Korea's latest propaganda video shows a rocket attack on New York but, as John Sparks asks, is anyone listening?
