Some who telephone Claridge's, for example (5)
I believe the answer is:
hotel
'claridge's for example' is the definition.
(Claridge's is a London hotel)
'some who telephone' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'HOTEL' is hidden in the letters of 'who telephone'.
(Other definitions for hotel that I've seen before include "Accommodation building" , "Stop on journey perhaps" , "Lodging establishment" , "It provides accommodation" , "that will charge its guests" .)