It was broadcast on the ITV network from 8 January 2002 to 14 April 2006.
The show initially focuses on three very different couples, but from the third series onward it revolves around a complex love triangle between Tanya Turner (Zöe Lucker), Amber Gates (Laila Rouass), and Conrad Gates (Ben Price).
The fourth series also comprises nine episodes, two of which are 90 minutes long.
Typical episodes have a running time of approximately 45 minutes.
The Sport Relief special aired on Saturday 15 July.