Related Clues:

• One's arrival is a relief for the surgery
• Doctor who covers the absence of another
• Stand-in starts to learn off Cambridge University master
• ____ tenens, a deputy or stand-in
• Column almost collapsed: one fills gap
• Replacement doctor
• Substitute GP
• Temporary doctor or member of clergy
• One being a substitute in practice?
• I stand in watering-hole having demolished a litre with little hesitation
• Temporary stand-in
• Stand-in student copper discovered bomb outside
• Replacement bass put in an appearance in auditorium
• Sub edited unfinished column
• Look, I'm not sure about coming in as substitute