This page details all episodes which were not transmitted in the programme's usual scheduled timeslot in the UK. Some of them will have been changed on a national basis and some on a regional basis. The notes on each episode describe the time that the episode was transmitted and the reason for the change, although some will have been merely due to situations such as altered Christmas schedules.

This information should be read in conjunction with the page on Transmission Arrangements to show what the usual transmission pattern was at the time that the episode was shown.