Possible Clues:

• Do the same
• Carry on the same way ... and what the ends of 17-, 25-, 35- and 48-Across do
• Imitate, and what the last words of 18-, 26-, and 42-Across can do
• Play another club, perhaps, in due course
• Do the same and take a keen interest in the case
• Be guided by corporation man and go from club to club
• It's on the cards that one must pursue clothing this way (6, 4)
• Take the place of businessman and do the same
• Do what someone else has done and support clubs?
• Put a spade atop a spade, say