Was PM unprejudiced, where only the elite accommodated? (7)
I believe the answer is:
mayfair
'where only the elite accommodated?' is the definition.
(wealthy area of London)
'was pm unprejudiced' is the wordplay.
'was pm' becomes 'may' (Theresa May).
'unprejudiced' becomes 'fair'.
'may'+'fair'='MAYFAIR'
(Other definitions for mayfair that I've seen before include "smart residential district" , "capital area" , "quarter of the capital" , "West End area" , "Prosperous part of our capital" .)