High-flying executives take extraordinary steps to ensure their companies are fighting fit by going undercover in their own businesses. This is the original UK series, which was later spun off into shows of the same name in other countries.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | June 2009 | June 2009 | 2 |
| Season 2 | July 2010 | September 2010 | 7 |
| Season 3 | July 2011 | August 2011 | 6 |
| Season 4 | July 2012 | August 2012 | 6 |
| Season 5 | July 2013 | August 2013 | 6 |
| Season 6 | July 2014 | August 2014 | 6 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 33 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 33 |
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