Undercover

Paul Lewis, the Guardian's Special Projects Editor, is the journalist behind revelations about police involvement in the death of newspaper vendor Ian Tomlinson at the G20 protests. He is the winner of the Bevins Prize for Outstanding Investigative Journalism and was voted Journalist of the Year and the British Press Awards 2010. Rob Evans, a Guardian reporter since 1999, has won awards for exposing corruption such as BAE's corrupt payments and for his freedom of information work. He is the author of Gassed, a book published in 2000 revealing British chemical warfare experiments on soldiers.