British Airways (London) as planned, operated the last Boeing 737 revenue flight on September 30 between Turin and London (Gatwick) with Boeing 737-436 G-DOCX (msn 25858).
Copyright Photo: Marco Finelli. G-DOCX sits on the gate at London (Gatwick) after it operated the last Boeing 737 revenue flight from Turin as flight BA 2579.
British Airways aircraft slide show: 
Airline Aircraft Type “Endangered Species List”:
To be fair the 734’s were seriously dilapidated and shouldn’t have been allowed to go on this long. BA did itself no favours keeping them. The interiors were disgusting by the end, I flew in them twice this year and regardless of my enthusiasm they were beyond unacceptable.