Possible Clues:

• Relief for senior officer stuck in chimney
• Behold, come and be a stand-in
• He acts as a substitute in practice
• See copper beginning to mismanage deputy
• Doctor's temporary replacement
• Physician's stand-in
• Stand-in copper in London or Manchester, originally
• Stand-in professional
• Professional temp
• Look crummy? Oddly, it can be a relief for doctor