Plant at least three detectives in Vauxhall? (10)
I believe the answer is:
aspidistra
'plant' is the definition.
(aspidistra is a kind of plant)
'least three detectives in vauxhall?' is the wordplay.
I cannot quite see how this works, but
'detectives' could be 'dis' (Detective Inspectors, DIs) and 'dis' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'at' acts as a link.
Can you help me to learn more?
(Other definitions for aspidistra that I've seen before include "Iris adapts (anag) - indoor plant" , "The biggest - (in the world) (Gracie Fields)" , "Plant of the lily family" , "Household growth" , "leafy plant" .)