mr temerko has also personally donated more than £700,000 to the conservative party. were entirely lawful, properly declared, and have not been made in return for any special treatment. they said the environment has been fully considered during the planning process. but it is another russian businessman who owns aquind. viktor fedotov stays away from spotlight. but his secrets are in the files. voiceover: the total length of our trunk pipelines - is over 68,000 kilometres. they reveal he made a fortune from a project that was mired in allegations of corruption. an oil pipeline in eastern siberia. vmcsovsk: transneft - is the world's largest pipeline company, one of the most important infrastructure systems in russia. the pipeline was built by transneft, a company owned by the russian state. in 2008, an audit report suggested the company had lost huge sums to corruption. transneft was paying unnecessary intermediaries, tens of millions of dollars, for services that these intermediaries couldn't provide. so in our calculation, $4 billion was stolen or misappropriated. o