The anti-corruption charity began its campaign in June 2009 with the aim of persuading the government to introduce a law that would allow the prosecution of UK individuals and organisations that paid bribes overseas.
The UK's anti-corruption laws were woefully outdated, with the most recent legislation dating back to 1916, making prosecutions on a global scale almost impossible.
The UK had signed up in 1997 to the Anti-Bribery Convention of the Organisation for Economic Cooperation and Development, but had yet to implement measures to conform with it. And in 2009, the UK slipped to joint 17th in the world on Transparency International's annual Corruption Perceptions Index.
The charity positioned itself as an authority on the subject and started producing briefings for MPs, the media and civil servants. It also won support from business leaders and developed crystal clear policy objectives.
The work paid off. In parliamentary debates about the Bribery Bill, the charity was mentioned 16 times in the House of Lords and 12 times in the Commons. The House of Commons library briefing for MPs called Transparency International "the main non-governmental organisation that monitors and campaigns on corruption issues".
Parliament passed the Bribery Act just before the general election this year. It makes individuals and organisations liable for their involvement in bribery anywhere in the world and has already become the global standard for such legislation. For a campaign without a lot of money behind it, that's a big impact.
Stephen Cook, editor of Third Sector, said: "This is a great example of the voluntary sector acting as the conscience of the nation."
Awarded to a voluntary organisation that has run a project that has had a substantial impact on national or international life
David Ainsworth Reporter, Third Sector
Stephen Cook Editor, Third Sector
Tristan Donovan Deputy editor, Third Sector
John Plummer Reporter, Third Sector
Andy Ricketts News editor, Third Sector
Kaye Wiggins Reporter, Third Sector
British Heart Foundation
Cancer Research UK
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