Concealed mike at Paddington, provoking great annoyance? (7)
I believe the answer is:
bugbear
'great annoyance?' is the definition.
'concealed mike at paddington' is the wordplay.
'concealed mike' becomes 'bug' (hidden microphone).
'at' is a charade indicator (letters next to each other).
'paddington' becomes 'bear' (Paddington Bear is an example).
'bug'+'bear'='BUGBEAR'
'provoking' acts as a link.
(Other definitions for bugbear that I've seen before include "It causes obsessive fear" , "Object of obsessive, foolish fear" , "Cause of great distress" , "Bete noire" , "Object of dread or apprehension" .)