The most common and most likely answer to this crossword clue is the 6 letter word CANTAB
I've seen this crossword clue in Financial Times
C
A
N
T
A
B
More clues leading to the result CANTAB
- Cambridge, where taxi carries worker
- . Graduate worker getting into vehicle
- Label on vessel for Cambridge
- Pretentious? A bishop of Cambridge?
- Light blue taxi transporting soldier
- Stop account of university
- Worker in taxi from Cambridge
- Is unable to answer bachelor of a university
- Hypocrisy to back graduate, one from Cambridge University
- Refusal to award a bachelor's degree from Cambridge
Buddy explains!

The straight part
We know that "Cambridge" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cambridge = cantab.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.