Possible Clues:

• One deals in ruddy painting up here (6)
• Dealer in tea who takes part in a swift attack, we hear
• Does one deal with ruddy painting back there?
• 'As some grave Tyrian-- , from the sea' (Matthew Arnold)
• Does he deal with the ruddy art back here?
• One engaged in business on ship
• Retard (anag.)
• One's up with the ruddy skill for business
• Business person uses revolutionary method in retirement
• Dealer, monger