Current TV was launched in the US in 2005 by ex-US vice president Al Gore, and became available in the UK two years later on Sky and Virgin Media.
The majority of programming on Current TV derives from viewer-created content pods of three to eight minutes in length on a variety of subjects.
However, the channel also hosts a range of specially-commissioned programmes, including a documentary on prostitution fronted by Gail Porter and a programme on the decriminalisation of drugs presented by Howard Marks.
In the year to January 2011, this mix of content has helped the channel triple its audience on satellite and cable, according to BARB data.
James DuBern, senior vice president of programming for Current TV, said: "In the last four years we have continuously invested in Britain's most exciting and emerging talents to bring hard-hitting stories and real-life documentaries to the forefront.
"We are proud to have commissioned over 250 factual programmes from over 250 individuals and small indies since our launch."
Current TV has commissioned four new programmes to air in the next three months, starting with Man Versus Earth, a Zig Zag-produced, hour-long documentary on man's battle against the ever-growing threat of natural disasters.
Doctors Without Borders is a two-part observational documentary charting the work of the Médecins Sans Frontières charity in the Democratic Republic of Congo.
Also airing on the channel is Death Row Diaries, featuring journalist and lawyer Laura Barry spending the final week with a death row inmate before their execution.
The final commission is What Did I Do Last Night?, a six-part factual entertainment series focused on piecing together the "forgotten hours" of booze-fuelled nights out when it comes to the morning after.
Last week, Current TV appointed experienced UKTV executive Jane Mote as its new UK managing director, tasking her with taking the broadcaster to "the next level".