Possible Clues:

• This official's brief usually just as politically correct
• Officer left in charge, introduced to author to artist
• Officer making artist subject to the law?
• Officer who, in short, must be politically correct
• Officer, having to investigate around Salisbury, turned up before board
• Smashing local cop is bent on finding Ecstasy?
• Officer in charge, captured by European artist
• Cop on beat - cell is prepared
• Officer likely to detain various cons etc
• This officer in short could appear to be politically correct