Linda Robson and Pauline Quirke, who play Tracey and Sharon, are childhood best friends in real life - which explains the childhood photos.
The sitcom was revived in 2014, 16 years after the last episode was broadcast.
Sharon's middle name is given as Perpetua. This is the real middle name of Pauline Quirke, who plays Sharon.
On Tuesday, 5th February 2019, ITV's Head of Television Kevin Lygo revealed to the Daily Mirror newspaper that sitcoms Birds of a Feather and Bad Move would not be returning. The UK's largest commercial broadcaster now has no sitcoms being broadcast on its main channel for the first time in its 64 year history.
The series originally ran from October 16th 1989 until December 24th 1994. A special flashback episode was broadcast on March 3rd 1996. The series returned on May 26th 1997 until the last episode on December 24th 1998. It was then reincarnated in 2014.