St Cedd's College

St Cedd's College was a college in Cambridge University, a respected institute of higher education on Earth.

Professor Chronotis had residency at St Cedd's College for some time, residing in his rooms - which were, unbeknownst to all, his TARDIS. (TV: Shada)

The Fourth Doctor and Romana travelled to Cambridge (presumably St Cedd's College) and were abducted by use of the Time Scoop. (TV: The Five Doctors) 

The Eighth Doctor and Romana also visited St Cedd's College to visit (once again) Professor Chronotis. (WC: Shada, AUDIO: Shada)

The Doctor took an honourary degree at St Cedd's in 1960 and was known to college porter Wilkin. Accounts differ as to whether it was in his Fourth or Eighth incarnation. (TV: Shada, WC: Shada, AUDIO: Shada)

Chemistry student Chris Parsons studied at St Cedd's College in the later 1970s. (WC: Shada, AUDIO: Shada)

Behind the scenes

 * Douglas Adams reused St Cedd's, along with the character of Professor Chronotis, for his novel Dirk Gently's Holistic Detective Agency. The Professor in Dirk Gently, though, is not identified as a Time Lord, nor is his time machine identified as a TARDIS.