Possible Clues:

• Client has no hesitation in this business
• The tradition of copper rejecting annual check-ups
• Practice that gets one's patronage
• See us as of habit with Tom
• To specs
• It's the usual thing to see you and most of the rest
• It's their wont and, in the plural, their duty
• Copper most upset at practice
• As usual see you get most of 13 across
• Usual way of doing something