Academician put in danger rings London college (8)
I believe the answer is:
imperial
'london college' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'academician put in danger rings' is the wordplay.
'academician' becomes 'a' (this might be a standard abbreviation I've not previously seen).
'put in danger' becomes 'imperil' (synonyms).
'rings' indicates putting letters inside (some letters are ringed or contained by others).
'a' put within 'imperil' is 'IMPERIAL'.
Can you help me to learn more?
(Other definitions for imperial that I've seen before include "Relating to empire" , "Majestic - not metric" , "Supreme, august; a beard" , "Like some rulers" , "Magnificent; small pointed beard" .)