Tuesday 27 December 2005 1.41pm
Timetables are set by TfL rather than the company which operates the route.
Changes to bus routes are shown on this page:
(scroll down past the Christmas information)
There's no mention of the 42 or 78, so I guess the change happened before 9 December
There's more info on this enthusiast site:
- 42 timetable dated Oct 05
- 78 timetable date Nov 03