The web page /w/tt/ has links to the current timetables for units of study taught by the School. Similarly /w/tt/personal/ has links to the current teaching timetables for School staff.
Timetables from previous years are preserved, going back to 2005: see, for example, /w/tt-2009Sem2/personal/.
Summer School timetables (Sem4) are available for most of the years, but not all.
The script /ut/get_tt.py simply retrieves and redisplays these timetables, changing the style somewhat. The timetable required should be specified in the query: see /u/UG/mathstattimetable.html for examples.