Series 23 of British television drama The Bill was broadcast from 3 January until 28 December 2007. The series consisted of 92 episodes, and saw the conclusion of two long running-storylines, the disappearance of schoolgirl Amy Tennant and DC Zain Nadir’s undercover drug sting, prior to the return of single-themed episodes, removing much of the serialiased format formally introduced in 2002 under producer Paul Marquess; episode titles also started appearing on screen again from Episode 20 onwards. Several episodes were aired out of production order, most notably the final parts of the six episodes for the Zain storyline. Despite at the time not even being billed for broadcast, and the 'previously' and 'next time' segments not matching the episodes around them, the episodes were brought forward due to heavy demand from the British viewing public. This also meant that the 'previously' and 'next time' segments on the subsequent episodes had to be re-edited to show this, and that two small additional scenes had to be recorded to be placed into Episode 480 to reference the death of PC Honey Harman. For the DVD release, to avoid confusion, these episodes have been renumbered and now serve as 480 and 481, with the following four episodes renumbered to 482–485 respectively.